MCCQE MCCQE Part 1 Exam Questions and Answers

The most appropriate and professional response is to focus on the current clinical situation and reassure the family that you will take responsibility for assessment and treatment. Criticizing a colleague (A, B, E) or deflecting to generalities (D) is unprofessional and unhelpful in crisis management.

Toronto Notes 2023 – Psychiatry, Physician-Patient-Family Communication:

“In emotionally charged or crisis situations, the physician must remain focused, empathetic, and professional. Avoid blaming colleagues; instead, offer a concrete plan of care.”

MCCQE1 Objectives – Psychiatry > Ethics and Professionalism:

“Candidates must demonstrate professionalism in managing conflicts, focusing on patient care while maintaining collegial respect.”

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Physicians in Canada may charge patients for uninsured services (e.g., completion of forms, cosmetic procedures, some travel-related vaccines), but they may not charge extra for insured services or preferential access. Doing so violates the Canada Health Act, which mandates accessibility and universality of insured services.

Toronto Notes 2023 – ELOM, Health Care System:

“Physicians may charge for uninsured services but may not charge block fees for insured services, nor can they charge for expedited access to insured services.”

MCCQE1 Objectives – ELOM > Health Policy and System:

“Candidates must recognize practices that violate the principles of publicly funded health care, including charging for insured services or access premiums.”

Option A is not permitted under law. Options B, D, and E involve insured services (e.g., home visits, after-hours care) and cannot be billed directly to patients.

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Primary herpetic gingivostomatitis caused by HSV-1 is common in toddlers. It presents with high fever, irritability, drooling, refusal to eat, and painful oral ulcers on the lips, gums, and tongue. Cervical lymphadenopathy is common.

Toronto Notes 2023 – Pediatrics, “Infectious Conditions in Children”:

“Primary HSV-1 infection in children presents with high fever, cervical lymphadenopathy, and painful oral ulcers (gingivostomatitis).”

MCCQE1 Objectives (Pediatrics > 75-2: Infectious Diseases):

“Candidates must recognize viral exanthems and enanthems, including herpetic gingivostomatitis, based on clinical findings.”

Kawasaki (A) includes conjunctivitis, strawberry tongue, and extremity changes. Epiglottitis (B) presents with drooling but without oral ulcers. Mono (C) lacks the ulcerative pattern. Hand-foot-mouth (D) affects palms and soles, not inner lips and gums predominantly.

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In cases of blunt testicular trauma with inability to palpate the testicle due to hematoma, scrotal ultrasonography is the first-line investigation to assess for testicular rupture or other injury.

Toronto Notes 2023 – Urology, “Testicular Trauma”:

“Scrotal ultrasound is the investigation of choice to assess for testicular rupture, hematoma, or torsion. Early imaging is critical if testis is non-palpable or if hematoma is significant.”

MCCQE1 Objectives (Surgery > 51-2: Genitourinary Trauma):

“Candidates must investigate testicular trauma using ultrasound to rule out rupture or torsion.”

Exploration (B) is done if ultrasound confirms rupture. Observation or discharge (A, E) without imaging risks missing serious injury.

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The presentation is consistent with cervical spondylosis — a degenerative condition. In the absence of neurologic findings, further imaging beyond plain radiography is not warranted. Management includes conservative measures such as physiotherapy and analgesia.

Toronto Notes 2023 – Rheumatology, Cervical Spondylosis:

“Patients with typical cervical spondylosis and no red flags (e.g., neurologic deficits) do not require MRI. Treatment is conservative. Radiographs showing disc space narrowing and osteophytes confirm diagnosis.”

MCCQE1 Objectives – Internal Medicine > Musculoskeletal Disorders:

“Candidates must recognize typical degenerative spine disorders and avoid unnecessary investigations when clinical findings are straightforward.”

MRI (B) is useful if myelopathy or radiculopathy is suspected. CT (A), EMG (C), and LP (D) are not indicated here.

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Magnesium sulfate toxicity is dose-dependent. The earliest and most sensitive clinical sign is theloss of deep tendon reflexes (especially patellar), which occurs before respiratory depression or cardiac changes.

Toronto Notes 2023 – Obstetrics Chapter:

“Toxicity from magnesium sulfate is progressive and typically presents first with loss of deep tendon reflexes. Respiratory depression and cardiac arrest occur at higher serum levels. Regular monitoring of reflexes, respiratory rate, and urine output is essential.”

MCCQE1 Objectives (Obstetrics > 83-3: Preterm Labour and Tocolysis):

“The candidate must recognize early signs of magnesium sulfate toxicity including areflexia and respiratory depression.”

Tachycardia (B), hypotension (C), and tachypnea (D) are not typical early signs. Oliguria (E) may be a risk factor for accumulation but is not the first sign of toxicity.

Patients with sickle cell anemia often develop functional asplenia due to repeated splenic infarction. The spleen plays a critical role in clearing encapsulated organisms such as Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis. Functional asplenia significantly increases the risk of overwhelming sepsis.

Toronto Notes 2023 – Hematology, “Sickle Cell Disease”:

“Functional asplenia is common in sickle cell disease and increases the risk for sepsis due to impaired clearance of encapsulated bacteria.”

MCCQE1 Objectives (Pediatrics > 77-2: Hematology):

“Candidates must recognize that patients with functional asplenia are at increased risk for sepsis and require prompt evaluation for fever.”

Neutrophil dysfunction (B) and immunoglobulin deficiency (C) are not typical features of sickle cell anemia. Chronic anemia (D) and iron overload (E) do not directly increase sepsis risk.

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This patient presents with panic-like somatic symptoms triggered by bereavement. Normal investigations rule out cardiac pathology. Grief therapy is appropriate as the underlying stressor is unresolved grief and anxiety.

Toronto Notes 2023 – Psychiatry, Grief and Anxiety Disorders:

“Bereavement-related anxiety and somatization are common. Grief counseling can help reduce somatic and psychological symptoms when medical causes are ruled out.”

MCCQE1 Objectives – Psychiatry > Anxiety and Bereavement:

“Candidates should recognize psychological sequelae of grief, including panic and health anxiety, and provide appropriate psychological support.”

Metoprolol (C) is not indicated without confirmed cardiac cause. Lorazepam (B) may offer short-term relief but does not address the underlying grief. Stress testing (A) is unnecessary with repeated normal investigations.

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A varicocele is a dilatation of the pampiniform plexus that presents with a “bag of worms” appearance, worsens with standing, and improves when lying down. It is most common on the left side due to anatomical drainage differences.

Toronto Notes 2023 – Urology, Scrotal Disorders:

“Varicoceles often present with a dull, aching pain and scrotal swelling that worsens when upright and disappears when supine.”

MCCQE1 Objectives – Internal Medicine > Urology:

“Candidates must recognize and diagnose varicocele by physical exam findings and typical symptom history.”

Cryptorchidism (A) refers to undescended testes. Torsion (B) presents acutely with severe pain. Hydrocele (C) transilluminates and is not posture-dependent. "Spermatocyte" (D) is not a clinical diagnosis.

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Physicians in Canada who have conscientious objections to procedures such as abortion are legally and ethically required to make an effective referral to another provider or service that can offer the treatment. The provider must not delay access to care.

Toronto Notes 2023 – ELOM, “Conscientious Objection”:

“A physician who objects to providing a service for reasons of conscience must make an effective referral to another provider or agency.”

MCCQE1 Objectives (ELOM > Professionalism > 90-1):

“Candidates must recognize the obligation to refer patients for services they themselves will not provide due to personal or religious beliefs.”

Delaying care (C), imposing personal beliefs (A), or suggesting alternatives like adoption (D) is inappropriate and may violate patient autonomy.

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This scenario describes acute delirium, common in hospitalized elderly patients. Patients may say things they don’t mean. Reassuring family members not to take hurtful comments personally is an important part of family counseling.

Toronto Notes 2023 – Geriatrics, “Delirium”:

“Patients may become agitated, hallucinate, or be aggressive. Families should be counseled not to take the behavior personally and continue to support orientation.”

MCCQE1 Objectives (Geriatrics > 41-1: Cognitive Disorders):

“Candidates must support caregivers of delirious patients, providing guidance on managing emotional and behavioral symptoms.”

Avoiding visits (A), confronting the patient (C), or emotional withdrawal (E) are counterproductive. Providing gentle information is appropriate (contradicts B).

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When a competent patient declines dialysis, the next step is to support shared decision-making and explore options that align with their lifestyle. Peritoneal dialysis may allow more flexibility and autonomy compared to hemodialysis, making it more acceptable to patients with demanding schedules.

Toronto Notes 2023 – Nephrology, Chronic Kidney Disease Section:

“Peritoneal dialysis offers the advantage of home-based treatment and flexible scheduling. Patient education and peer support can improve acceptance and adherence to dialysis initiation.”

MCCQE1 Objectives – Internal Medicine > Nephrology:

“The candidate should explore treatment alternatives collaboratively, emphasizing patient autonomy, while addressing misconceptions and lifestyle concerns related to dialysis.”

Simply warning the patient or withdrawing engagement (Options B and C) may undermine rapport. Access to medical records (D) is a right, but does not actively address treatment planning. Exploring new employment (E) is inappropriate at this stage.

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Ramipril, an ACE inhibitor, is contraindicated in pregnancy due to risks of fetal renal dysgenesis, oligohydramnios, and fetal death, especially in the second and third trimesters.

Toronto Notes 2023 – Obstetrics, Hypertensive Disorders of Pregnancy:

“ACE inhibitors and ARBs are contraindicated in pregnancy due to their teratogenic potential and adverse fetal effects.”

MCCQE1 Objectives – Obstetrics > Hypertension in Pregnancy:

“Candidates must identify safe antihypertensives during pregnancy and contraindicated medications such as ACE inhibitors and ARBs.”

Methyldopa, labetalol, nifedipine, and hydralazine are considered safe and are commonly used in pregnancy.

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This patient has clinical signs of an eating disorder — fatigue, low BMI, hypotension, and hypokalemia — likely secondary to nutritional deficiencies or purging. The first step is to sensitively explore the patient's perception of weight and body image. Effective management requires rapport and careful conversation.

Toronto Notes 2023 – Psychiatry, Eating Disorders:

“Approach patients with suspected eating disorders non-judgmentally. Begin with permission to discuss weight or body image. Screening tools like SCOFF can help guide further assessment.”

MCCQE1 Objectives – Psychiatry > Eating Disorders:

“Candidates must recognize signs of eating disorders and initiate a respectful and effective patient-centered discussion.”

Referring to the ED (B) is not urgent without hemodynamic instability. Advising caloric intake (C) bypasses assessment. GI referral (D) is not appropriate at this stage.

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Button batteries lodged in the esophagus require urgent endoscopic removal due to risk of tissue necrosis, perforation, and tracheoesophageal fistula within hours. Batteries beyond the esophagus may pass spontaneously if the child is asymptomatic.

Toronto Notes 2023 – Pediatrics, “Foreign Body Ingestion”:

“Button batteries in the esophagus are medical emergencies and must be removed immediately. Batteries in the stomach or intestines may be observed if the child is asymptomatic.”

MCCQE1 Objectives (Pediatrics > 78-2: Gastrointestinal Emergencies):

“Candidates must identify when foreign body ingestion poses immediate risk and requires emergency intervention.”

Batteries in the stomach or intestines (A–C, E) usually pass without complication, especially if the child is asymptomatic and the battery is <2 cm.

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This patient presents with fever, confusion, anemia with schistocytes, thrombocytopenia, and renal impairment — fulfilling the classic pentad of thrombotic thrombocytopenic purpura (TTP). TTP is a hematologic emergency requiring plasma exchange.

Toronto Notes 2023 – Hematology, “Microangiopathic Hemolytic Anemia” Section:

“TTP is a medical emergency. Features include MAHA, thrombocytopenia, renal failure, neurologic symptoms, and fever. Schistocytes on blood film are diagnostic.”

MCCQE1 Objectives (Internal Medicine > 76-7: Hematologic Disorders):

“Candidates must urgently recognize TTP and initiate emergent plasma exchange therapy.”

AML (B) does not present with schistocytes. HIV (C) can cause thrombocytopenia but not MAHA. ITP (D) causes isolated thrombocytopenia without anemia or schistocytes.

In Canada, a minor may consent to medical care if the physician believes they have the capacity to understand the nature, benefits, and risks. This is known as the “mature minor doctrine.” Capacity is based on understanding, not age.

Toronto Notes 2023 – ELOM, “Consent and Capacity” Section:

“A minor may consent to treatment if they demonstrate sufficient maturity and understanding. It is the physician’s responsibility to assess capacity prior to prescribing.”

MCCQE1 Objectives (ELOM > 99-3: Consent and Confidentiality):

“Candidates must assess the patient’s ability to understand and make informed decisions, regardless of age.”

Prescribing without assessment (B) is premature. Reporting to child services (A) is only necessary if there are signs of abuse or coercion. Parental involvement (C) is not mandatory. Refusal based on age (E) contradicts legal and ethical practice.

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Early identification of sensorineural hearing loss through universal newborn screening enables early intervention (e.g., cochlear implants, speech therapy), which can result in near-normal language development.

Toronto Notes 2023 – Pediatrics, Hearing Loss:

“Children diagnosed early with bilateral hearing loss and provided with appropriate intervention (e.g., amplification or implants) can achieve normal speech and language milestones.”

MCCQE1 Objectives – Pediatrics > Development & Communication Disorders:

“Candidates must understand the importance of early detection and intervention in congenital hearing loss and its impact on speech and literacy outcomes.”

Other options (A–C, E) are outdated or overly pessimistic. Current evidence supports favorable outcomes with early diagnosis and management.

Patients with developmental disabilities must still be engaged directly unless clearly incapable. It is vital to first establish the companion’s relationship to the patient and give the patient the opportunity to communicate.

Toronto Notes 2023 – ELOM, Consent and Capacity:

“Presume capacity in adults with developmental disabilities unless proven otherwise. Direct communication with the patient is essential, and the identity of accompanying individuals should be clarified.”

MCCQE1 Objectives – ELOM > Patient Autonomy and Consent:

“Candidates must respect patient autonomy and include developmentally delayed individuals in medical discussions unless incapacity is determined.”

Options A and C delay establishing capacity and relationship. Option D is premature. Option E bypasses consent and interaction with the patient.

This patient presents with hypotension, diffuse abdominal pain, and a history of contact sports injury with preceding symptoms of infectious mononucleosis (sore throat, fatigue). The spleen is commonly enlarged in mononucleosis, making it vulnerable to rupture after even minor trauma.

Toronto Notes 2023 – General Surgery and Infectious Diseases Sections:

“Splenic rupture is a known complication of mononucleosis, particularly after trauma. Symptoms may include diffuse abdominal pain, hypotension, and signs of hemorrhagic shock.”

MCCQE1 Objectives (Surgery > 84-1: Abdominal Trauma):

“Candidates should identify splenic rupture as a cause of hypotension and abdominal pain following blunt abdominal trauma, especially in patients with splenomegaly.”

Appendicitis (B) would present with localized right lower quadrant pain. Pneumonia (C) and pyelonephritis (D) would present with respiratory or urinary symptoms. Ruptured duodenum (E) is much less likely without specific trauma to that region or signs of peritonitis.

Comprehensive and Detailed Explanation:

Given his age and a first-degree relative with colon cancer diagnosed before age 60, this patient meets criteria for early colon cancer screening. Colonoscopy is the gold standard for both screening and diagnosis in this context.

Toronto Notes 2023 – Gastroenterology, “Colorectal Cancer Screening”:

“Patients with a first-degree relative diagnosed with colorectal cancer before age 60 should begin screening at age 40, or 10 years before the relative’s diagnosis. Colonoscopy is the preferred method.”

MCCQE1 Objectives (Population Health > Preventive Screening > 63-1):

“Candidates must apply colorectal cancer screening guidelines and select appropriate tests based on risk level.”

FIT (A) is for average-risk screening. MRI (B) and CT colonography (E) are secondary. Barium enema (D) is outdated.

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Comprehensive and Detailed Explanation:

Sexual dysfunction, including anorgasmia, is a common side effect of SSRIs like escitalopram. Bupropion, a norepinephrine-dopamine reuptake inhibitor, has minimal sexual side effects and can be safely added to mitigate this issue while preserving the antidepressant effect.

Toronto Notes 2023 – Psychiatry / Pharmacology:

“SSRI-induced sexual dysfunction can be managed by dose reduction, switching agents, or adding bupropion.”

MCCQE1 Objectives (Psychiatry > 71-1: Depressive Disorders):

“Candidates should be able to address side effects of antidepressants, including sexual dysfunction, and adjust therapy appropriately.”

Increasing the dose (A) may worsen sexual dysfunction. Venlafaxine (B), an SNRI, also has sexual side effects. D (no change) does not address the patient's concern.

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This is a classic presentation of acute acetaminophen (paracetamol) overdose. The most serious consequence, especially with delayed treatment, is fulminant hepatic failure.

Toronto Notes 2023 – Toxicology, Acetaminophen Toxicity:

“Acetaminophen overdose is the most common cause of acute liver failure. Delayed presentation leads to jaundice, coagulopathy, encephalopathy, and possible death.”

MCCQE1 Objectives – Internal Medicine > Toxicology:

“Candidates must identify acetaminophen overdose by clinical history and recognize fulminant hepatic failure as a primary complication.”

Cerebral edema (C) may occur secondarily, but fulminant hepatic failure is the most direct and expected outcome. Renal failure (B), arrhythmias (E), and seizures (A) are not typical with acetaminophen.

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A tender, mobile lymph node following a recent localized infection (e.g., dental infection) is most likely reactive. In a young, otherwise well patient with no systemic symptoms or concerning features, observation is appropriate.

Toronto Notes 2023 – Internal Medicine, Lymphadenopathy:

“In patients with localized lymphadenopathy and a recent infection, observation for 4–8 weeks is often appropriate before further investigation.”

MCCQE1 Objectives – Internal Medicine > Hematology:

“Candidates should recognize benign features of lymphadenopathy (tender, mobile, <2 cm, localized) and manage conservatively unless red flags are present.”

Biopsy (B) and imaging (C, E) are premature. Bone marrow biopsy (D) is not relevant.

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The key public health message from a physician’s perspective is the evidence-based health risks and adverse effects associated with nonprescribed stimulant use (e.g., insomnia, anxiety, cardiovascular events, and dependency). This is central to a harm-reduction approach.

Toronto Notes 2023 – Public Health & Psychiatry, Substance Use:

“Misuse of prescription stimulants is common among university students. Education campaigns should emphasize medical risks including cardiovascular complications, addiction potential, and psychiatric disturbances.”

MCCQE1 Objectives – Preventive Medicine > Health Promotion:

“Candidates should identify core messages in public education campaigns, prioritizing evidence-based risks and harm reduction.”

Legal and ethical issues (B, C) are important but secondary to the health implications. Prevalence data (D) informs the campaign design, but is not the message itself. Study habits (A) are relevant for academic counseling, not medical messaging.

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Comprehensive and Detailed Explanation:

The most appropriate next step for a patient with intermittent palpitations and a normal ECG is Holter monitoring (or event monitoring). This can capture and correlate symptoms with cardiac rhythm.

Toronto Notes 2023 – Cardiology, “Palpitations”:

“Holter or event monitoring is indicated when the initial ECG is normal but the patient has episodic symptoms such as palpitations.”

MCCQE1 Objectives (Cardiology > 34-2: Arrhythmia):

“Candidates must use ambulatory ECG monitoring to investigate intermittent palpitations when resting ECG is unremarkable.”

Echocardiogram (A) assesses structural issues but not rhythm. β-blockers (B) should not be started without diagnosis. Stress testing (D) is for ischemia.

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Comprehensive and Detailed Explanation:

Infertility is defined as the inability to conceive after 12 months of regular, unprotected intercourse in women under 35 years. Since she has been trying for only 5 months, reassurance is appropriate.

Toronto Notes 2023 – Gynecology:

“Investigations for infertility in women under 35 should begin after 12 months of attempting to conceive, unless other risk factors are present.”

MCCQE1 Objectives (Gynecology > 82-1: Infertility):

“Candidates must apply appropriate timing and indications for infertility investigations based on patient age and history.”

Earlier testing is not warranted here. Options A–D are part of the infertility work-up but not before 12 months.

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Stimulants like methylphenidate can increase heart rate and blood pressure. In patients with cardiovascular risk (e.g., hypertension, nephropathy), stimulants should not be increased without first addressing elevated blood pressure.

Toronto Notes 2023 – Psychiatry, “ADHD in Adults”:

“Stimulants can exacerbate hypertension and must be used cautiously. Evaluate cardiovascular risk factors and control blood pressure before dose increases.”

MCCQE1 Objectives (Psychiatry > 71-1: ADHD):

“Candidates must consider the cardiovascular risks of stimulant therapy and monitor for hypertension prior to adjusting doses.”

While poor glycemic control (B) and renal disease (A) are important, BP control is most critical for immediate stimulant safety.

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Spontaneous, unilateral, blood-tinged nipple discharge in a postmenopausal woman is considered pathologic and warrants imaging to rule out intraductal pathology including malignancy. The best initial test is diagnostic mammography, often with ultrasound if indicated.

Toronto Notes 2023 – Breast Disorders:

“Unilateral, spontaneous, bloody nipple discharge should be evaluated with mammography and targeted ultrasound. Further tests such as MRI or duct excision are based on findings.”

MCCQE1 Objectives (Gynecology > 81-1: Breast Conditions):

“Candidates must recognize red flags for breast malignancy and apply appropriate initial diagnostic imaging.”

Serum prolactin (C) is indicated in galactorrhea. Galactography (D) and MRI (E) are second-line. Biopsy (A) is premature without imaging.

Comprehensive and Detailed Explanation:

While borderline personality disorder is challenging, symptoms (particularly impulsivity and suicidal behaviors) often attenuate with age and appropriate therapy (e.g., dialectical behavior therapy). Providing hope and clinical context to staff improves care and reduces stigma.

Toronto Notes 2023 – Psychiatry, “Personality Disorders”:

“BPD is associated with emotional dysregulation and impulsivity. Long-term prognosis is better than once believed, with many patients showing symptom remission over time.”

MCCQE1 Objectives (Psychiatry > 71-4: Personality Disorders):

“Candidates must provide appropriate education to patients and staff regarding prognosis and treatment of BPD.”

Statements A–D are false, stigmatizing, or dangerous.

For women aged 25–69 years who have had adequate negative screening, the recommendation is to repeat cervical cytology (Pap test) every 3 years, regardless of family history. Cervical cancer is caused primarily by HPV infection, not hereditary genetics. Family history does not alter the screening interval.

Toronto Notes 2023 – Gynecology, Cervical Cancer Screening Section:

“Routine screening with Pap test is recommended every 3 years in women aged 25–69 who have had three consecutive negative tests. Family history of cervical cancer does not modify the screening interval.”

MCCQE1 Objectives – Obstetrics and Gynecology > Cancer Screening:

“Candidates must apply population-based cervical cancer screening guidelines. Family history is not a risk modifier for screening frequency in cervical cancer.”

Options A and B are inappropriate as they increase screening frequency without indication. HPV testing (D) or colposcopy (E) are not recommended without abnormal cytology.

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This teenager presents with acute-onset dyspnea, paresthesias, and normal physical findings, consistent with a panic attack. Panic attacks often mimic cardiopulmonary pathology but are marked by symptoms like hyperventilation, tingling in the extremities, palpitations, and subjective air hunger with normal vitals and oxygenation.

Toronto Notes 2023 – Psychiatry:

“Panic attacks are characterized by sudden onset of intense fear or discomfort, accompanied by somatic symptoms such as dyspnea, paresthesias, tachycardia, and fear of losing control.”

MCCQE1 Objectives (Psychiatry > 71-3: Anxiety Disorders):

“Candidates must recognize panic attacks based on clinical features and differentiate them from cardiopulmonary conditions.”

Normal O2 saturation and physical exam rule out asthma or pericarditis. Cocaine use would present with more systemic toxicity. PSVT would cause consistent tachycardia.

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This 6-month-old presents with signs of systemic illness, tachypnea, hypoxia, and focal lung findings. In this age group, pneumonia can rapidly progress, and given the severity of symptoms, oral treatment is insufficient. Intravenous antibiotics are urgently indicated.

Toronto Notes 2023 – Pediatrics, Respiratory Infections in Infants:

“Infants under 6 months with signs of systemic illness, hypoxia (SpO2 < 94%), and respiratory distress should receive IV antibiotics. Delayed treatment may result in rapid clinical deterioration.”

MCCQE1 Objectives – Pediatrics > Respiratory Conditions:

“Candidates must recognize signs of serious lower respiratory tract infection in infants and initiate prompt IV antibiotic therapy when criteria for hospitalization are met.”

Oral antibiotics (C) are appropriate for mild outpatient pneumonia. Reassurance (B) and oral steroids (A) are inappropriate. IV fluids (D) may be supportive but do not address the infectious cause.

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In any suspected occupational exposure, the first step is a detailed occupational history to assess the nature, intensity, and duration of the exposure. This determines whether surveillance or further testing is appropriate.

Toronto Notes 2023 – Respiratory Medicine, “Occupational Lung Diseases” Section:

“When a patient presents with concerns about exposure to occupational hazards such as asbestos, detailed history is essential. Ask about job tasks, duration of exposure, use of personal protective equipment, and prior workplace assessments.”

MCCQE1 Objectives (Population Health > 97-2: Environmental and Occupational Health):

“Candidates must be able to obtain a detailed environmental and occupational history and determine the risk of exposure before ordering investigations.”

Ordering a chest radiograph (B) or PFTs (E) without confirming meaningful exposure is premature. Referral to a specialist (D) and reassurance (A) come only after the exposure risk is assessed.

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Low HDL is best managed with lifestyle changes such as increased aerobic physical activity, smoking cessation, and weight loss. Vigorous exercise has the strongest evidence for raising HDL levels.

Toronto Notes 2023 – Cardiology, Dyslipidemia:

“Increasing physical activity is among the most effective ways to raise HDL cholesterol. There is no consistent benefit to supplements such as garlic, nor does reducing salt or caffeine meaningfully raise HDL.”

MCCQE1 Objectives – Population Health > Cardiovascular Risk Management:

“Candidates should recommend evidence-based lifestyle interventions such as exercise to improve lipid profiles, particularly to increase HDL.”

Alcohol cessation (C) is generally beneficial for overall health but may actually lower HDL slightly. Garlic (D) and caffeine (E) are not evidence-based interventions for dyslipidemia.

ACE inhibitors such as ramipril are first-line for CHF with reduced ejection fraction, but a common adverse effect is a dry cough due to bradykinin accumulation. Angiotensin II receptor blockers (ARBs) offer the same hemodynamic and survival benefits without causing cough.

Toronto Notes 2023 – Cardiology, “Heart Failure” Section:

“In patients intolerant to ACE inhibitors due to cough, an ARB (e.g., losartan, valsartan) is the recommended substitute. ARBs also reduce mortality and hospitalizations in heart failure with reduced ejection fraction.”

MCCQE1 Objectives (Internal Medicine > 76-3: Congestive Heart Failure):

“Candidates should recognize ARBs as an alternative to ACE inhibitors in patients who develop adverse effects such as cough, while maintaining the mortality benefit.”

Other options (B–E) do not offer mortality benefits in CHF and may worsen the condition (e.g., CCBs, alpha-blockers, NSAIDs like COX-2 inhibitors).

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Referrals should be medically indicated. Physicians are not obligated to refer simply because a patient (or colleague) requests it, especially when it may lead to unnecessary care. The ethical and appropriate action is to explain your medical reasoning and decline an unwarranted referral.

Toronto Notes 2023 – ELOM, “Professionalism and Resource Stewardship” Section:

“Physicians have a responsibility to act as gatekeepers to specialist services and should not refer patients when criteria are not met. Explaining the reasoning and declining the request respectfully is appropriate.”

MCCQE1 Objectives (ELOM > 99-1: Professionalism and Clinical Judgment):

“Candidates must demonstrate ethical reasoning in managing requests for unwarranted interventions.”

Involving the emergency department (B) or another physician (C) is not appropriate unless there's a true conflict of interest. Calling a consultant (E) may be unnecessary if no medical reason exists.

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The description is classic for metatarsus adductus. The most important clinical factor guiding management is whether the foot is flexible or rigid. Flexible deformities typically resolve spontaneously and do not require intervention.

Toronto Notes 2023 – Pediatrics, “Musculoskeletal Conditions”:

“Metatarsus adductus: inward deviation of the forefoot. Management depends on flexibility. Flexible cases are benign and resolve spontaneously; rigid forms may need casting.”

MCCQE1 Objectives (Pediatrics > 78-2: Musculoskeletal Disorders):

“Candidates must assess and differentiate between flexible and rigid deformities to guide treatment in foot abnormalities.”

Other findings (B–E) are either unrelated or not determinant in metatarsus adductus management.

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Sudden onset dyspnea and pleuritic chest pain in a postoperative patient with tachypnea and clear lung fields are classic features of a pulmonary embolism (PE). Recent orthopedic surgery significantly increases VTE risk. Clear lungs on auscultation support this over pneumonia or CHF.

Toronto Notes 2023 – Respiratory, “Pulmonary Embolism”:

“Presentation includes sudden dyspnea, pleuritic chest pain, and tachypnea. Risk factors include recent surgery and immobilization. Examination often reveals clear chest auscultation.”

MCCQE1 Objectives (Internal Medicine > Cardiopulmonary > 44-1):

“Candidates must recognize PE in patients with risk factors (e.g., surgery) and classic features and initiate appropriate diagnosis and management.”

Fat embolism (B) usually presents with petechiae, neurologic symptoms, and occurs within 24–72 hours post-op. Cholesterol emboli (E) are more chronic and systemic.

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This presentation describesnormal developmental dysfluency, which typically occurs between ages 2–5 and often worsens duringtimes of stress or change, such as a new sibling. It is characterized byword repetitionand does not require intervention unless it persists >6 months, worsens, or causes distress.

Toronto Notes 2023 – Pediatrics, "Developmental and Behavioral Pediatrics" Section:

“Developmental stuttering is common between 2–5 years and often resolves without intervention. Reassurance is appropriate unless there are signs of persistent or severe stuttering, secondary behaviors, or parental concern.”

MCCQE1 Objectives (Pediatrics > 78-1: Development and Behavior):

“Candidates must recognize typical patterns of developmental speech dysfluency and differentiate them from pathological speech disorders. Observation and reassurance are often the appropriate initial step.”

Because the child is otherwise developing normally and the onset coincides with a known psychosocial stressor,reassuranceis the most appropriate step. Formal speech or behavioral therapy is not indicated at this time.

Comprehensive and Detailed Explanation:

Hyponatremia in a patient with lung cancer and euvolemia strongly suggests syndrome of inappropriate antidiuretic hormone secretion (SIADH), especially from small cell carcinoma. Serum osmolality is the best initial test to confirm hypotonic hyponatremia and distinguish true hyponatremia from pseudohyponatremia or other causes.

Toronto Notes 2023 – Endocrinology, “Hyponatremia”:

“Serum osmolality helps classify hyponatremia as hypotonic, isotonic, or hypertonic. SIADH typically causes hypotonic hyponatremia in euvolemic patients.”

MCCQE1 Objectives (Endocrinology > 37-1: Electrolyte Disorders):

“Candidates must evaluate the type and cause of hyponatremia using clinical status and laboratory tests including serum osmolality.”

Urine sodium (B) is useful after confirming hypotonicity. PTHrP (E) is associated with hypercalcemia of malignancy, not hyponatremia. Urinalysis (A) and CrCl (D) are less directly informative.

When couples face infertility-related decisions—particularly involving donor insemination—psychosocial counseling is essential. A mental health consultation helps explore emotional concerns, expectations, and readiness for non-biological parenting.

Toronto Notes 2023 – Gynecology, “Infertility and ART”:

“Psychological counseling is recommended for couples considering donor gametes to address emotional, ethical, and identity issues before proceeding.”

MCCQE1 Objectives (ELOM > Reproductive Ethics > 83-1):

“Candidates must understand the ethical and psychosocial considerations of assisted reproductive techniques and provide appropriate referrals.”

Suggesting adoption or switching care dismisses valid concerns (B, C). Ovulation induction (D) does not address azoospermia.

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In a euthyroid patient with an asymptomatic goiter or thyroid enlargement, the next step is a thyroid ultrasound to evaluate nodule size, composition, and features suggestive of malignancy.

Toronto Notes 2023 – Endocrinology, Thyroid Nodules and Goiter:

“TSH should be obtained first. If normal and there is a palpable mass or enlargement, ultrasound is indicated to evaluate for nodules and guide further testing (e.g., FNA).”

MCCQE1 Objectives – Internal Medicine > Endocrinology:

“Candidates must use thyroid ultrasound as the initial imaging study in the evaluation of thyroid enlargement or palpable nodules.”

T3/T4 (A) are not needed with normal TSH. FNA (D) is done if nodules are identified. CT (C) is used for retrosternal goiters or compressive symptoms. Calcium (E) is irrelevant here.

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Orchiopexy is the treatment of choice for cryptorchidism and should be performed between 6–18 months of age. Early surgery improves fertility outcomes and reduces malignancy risk.

Toronto Notes 2023 – Pediatrics, Urology:

“Undescended testes should be referred for orchiopexy ideally before 18 months of age. Observation beyond 6 months is not recommended.”

MCCQE1 Objectives – Pediatrics > Genitourinary Disorders:

“Candidates must recognize and refer for cryptorchidism early to optimize testicular function and reduce cancer risk.”

Hormonal therapies (C, D) are not recommended due to limited efficacy. Observation (A) is too late beyond

Comprehensive and Detailed Explanation:

For small renal masses (<4 cm), partial nephrectomy (nephron-sparing surgery) is the standard of care in patients who are surgical candidates. It preserves renal function and provides oncologic control.

Toronto Notes 2023 – Urology / Oncology:

“Small renal tumors <4 cm should be treated with partial nephrectomy. Active surveillance or ablation may be alternatives in poor surgical candidates.”

MCCQE1 Objectives (Urology > 59-2: Renal Masses):

“Candidates must manage small renal tumors with nephron-sparing surgery when feasible.”

MRI (A) is unnecessary after CT confirmation. Radiation (B) is not first-line. Surveillance (D) may be appropriate for elderly or frail patients, not this one. Ablation (E) is for high-risk surgical patients.

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Palliative radiotherapy is the treatment of choice for painful bone metastases, including those from prostate cancer. It provides localized pain relief and functional improvement.

Toronto Notes 2023 – Oncology, “Metastatic Bone Pain”:

“External beam radiotherapy is first-line treatment for localized bone pain from metastases. Relief occurs within days to weeks.”

MCCQE1 Objectives (Internal Medicine > Oncology > 52-1):

“Candidates must identify treatment options for symptom control in metastatic cancer, including palliative radiotherapy for painful bone lesions.”

Androgen deprivation therapy (B, C) treats systemic disease but doesn’t address acute pain. Opioids (D) may be used, but radiotherapy provides disease-targeted relief. Intrathecal steroids (A) are not standard for prostate metastases.

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Fibrocystic change is the most common benign breast condition in women of reproductive age. It typically presents with diffuse nodularity or "lumpy" areas, especially in the upper outer quadrant, and varies with the menstrual cycle. No dominant mass or systemic signs are expected.

Toronto Notes 2023 – Gynecology, “Benign Breast Conditions”:

“Fibrocystic changes often present with bilateral or unilateral nodularity, most commonly in the upper outer quadrants, without discrete masses.”

MCCQE1 Objectives (Gynecology > 81-1: Breast Conditions):

“Candidates must differentiate benign breast conditions from malignant ones based on presentation and physical exam findings.”

Paget disease (B) presents with nipple changes. Intraductal carcinoma (C) typically shows a discrete mass or suspicious features. Phyllodes tumours are usually well-circumscribed. Mastitis (E) is inflammatory and associated with erythema, fever, and tenderness.

The patient describes classic symptoms of depersonalization (“my voice sounds strange to me”) and derealization (“others seem like figures in a dream”), which define depersonalization/derealization disorder. There is preserved reality testing and no psychosis.

Toronto Notes 2023 – Psychiatry, “Dissociative Disorders” Section:

“Depersonalization/derealization disorder involves persistent or recurrent experiences of detachment from oneself (depersonalization) or surroundings (derealization), with intact reality testing and no delusions or hallucinations.”

MCCQE1 Objectives (Psychiatry > 79-4: Dissociative Disorders):

“Candidates must identify depersonalization/derealization disorder as a dissociative disorder distinct from psychosis or mood disorders.”

Schizophrenia (A) would include hallucinations or disorganized thinking. Conversion disorder (B) presents with neurological symptoms inconsistent with known diseases. Persistent depressive disorder (D) involves chronic low mood. Delusional disorder (E) would involve fixed false beliefs, which are not present here.

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This patient exhibits perfectionism, preoccupation with order and control, and reluctance to delegate — classic features of obsessive-compulsive personality disorder (OCPD). Unlike OCD, there are no intrusive thoughts or compulsions; rather, behaviors are ego-syntonic.

Toronto Notes 2023 – Psychiatry, Personality Disorders:

“OCPD is marked by perfectionism, rigidity, and preoccupation with productivity. It differs from OCD in lacking obsessions or compulsions.”

MCCQE1 Objectives – Psychiatry > Personality Disorders:

“Candidates must distinguish OCPD by traits of excessive perfectionism, control, and inflexibility, particularly when these interfere with functioning.”

Major depression (A) is marked by pervasive low mood, which is not reported. OCD (B) involves distressing obsessions and compulsions. GAD (C) is more generalized worry without the perfectionism and rigidity.

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When a screening program is introduced, the incidence rate appears to rise because more cases (including subclinical ones) are identified earlier. This is known as “lead-time bias” or “ascertainment bias.”

Toronto Notes 2023 – Public Health, Screening and Epidemiology:

“Screening increases the apparent incidence of disease as more early or latent cases are detected.”

MCCQE1 Objectives – Preventive Medicine > Screening:

“Candidates should understand how implementation of screening programs affects disease incidence and epidemiologic metrics.”

Case fatality rate (A) may decrease. PPV (B) depends on prevalence. Positive biopsy rate (C) may remain stable. Treatment rate (E) could increase, but incidence is the most directly and consistently affected.

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This adolescent exhibited acute suicidal behavior (attempted to jump out of a window), which is a psychiatric emergency. Regardless of intoxication or cause, such behavior mandates a safety-first approach: involuntary psychiatric assessment and protection from self-harm.

Toronto Notes 2023 – Psychiatry, “Suicide and Crisis Intervention” Section:

“Involuntary psychiatric admission is indicated when a patient poses a danger to themselves or others. Suicidal ideation or attempts require immediate evaluation and monitoring.”

MCCQE1 Objectives (Psychiatry > 79-2: Suicide and Risk Management):

“Candidates must identify suicidal behavior and initiate appropriate action, including involuntary admission if necessary for safety.”

Observation (B) may miss the window for action. Parents (A) should be contacted but are not a substitute for admission. Chlordiazepoxide (C) is not first-line in this scenario.

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Children with a first-degree relative who has premature coronary artery disease or hypercholesterolemia should undergo fasting lipid screening between ages 2–10. Since the child is 10, screening is indicated.

Toronto Notes 2023 – Pediatrics, “Preventive Care in Children”:

“Lipid screening is recommended for children ≥2 years old with a family history of early cardiovascular disease or hypercholesterolemia.”

MCCQE1 Objectives (Pediatrics > 78-1: Preventive Medicine):

“Candidates must screen children at high risk of cardiovascular disease appropriately, including lipid profile for familial hyperlipidemia.”

Diet and exercise counseling may follow screening, but testing is the first step. Reassurance alone (C) is inappropriate. Homocysteine (E) and HbA1c are not first-line tests in this setting.

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Comprehensive and Detailed Explanation:

In X-linked recessive disorders such as hemophilia A, carrier mothers (usually asymptomatic) have a 50% chance of passing the affected X chromosome to each son, who would then express the disease. Each daughter has a 50% chance of being a carrier but is generally not affected.

Toronto Notes 2023 – Genetics:

“X-linked recessive inheritance: Carrier mother has a 50% chance of having an affected son and a 50% chance of having a carrier daughter.”

MCCQE1 Objectives (Genetics > 61-1: Inheritance Patterns):

“Candidates must apply principles of X-linked inheritance to assess risk in offspring.”

If the mother is a known carrier (as inferred from having an affected son), the chance of a second affected boy is 50%.

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Comprehensive and Detailed Explanation:

Middle-aged to older men with social isolation and substance use disorders (especially alcohol) are among the highest-risk groups for completed suicide. They are less likely to seek help and often use more lethal methods.

Toronto Notes 2023 – Psychiatry, “Suicide Risk Assessment”:

“High-risk demographics include older men, social isolation, comorbid alcohol use, and chronic illness. These patients have the highest rates of completed suicide.”

MCCQE1 Objectives (Psychiatry > 71-1: Suicide Risk):

“Candidates must recognize epidemiologic risk factors for completed suicide, including demographics and comorbidities.”

Although women and youth have higher rates of suicidal ideation and attempts, men over 50 have the highest completion rates.

Comprehensive and Detailed Explanation:

The patient presents with classic symptoms of schizophrenia: delusions, hallucinations, social withdrawal, and disorganized appearance. The first-line treatment is antipsychotic medication—risperidone is a well-tolerated option among second-generation antipsychotics.

Toronto Notes 2023 – Psychiatry, “Schizophrenia”:

“Schizophrenia is treated with second-generation antipsychotics such as risperidone. These reduce positive symptoms like delusions and hallucinations.”

MCCQE1 Objectives (Psychiatry > 71-3: Psychotic Disorders):

“Candidates must recognize and manage schizophrenia with antipsychotics and distinguish from other mood or personality disorders.”

CBT (E) is supportive but not first-line. ECT (A) is used for severe depression or catatonia. Valproic acid (C) and carbamazepine (D) are mood stabilizers, not first-line for schizophrenia.

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Recruiting participants from an autism seminar introduces selection bias. This non-random selection increases the likelihood of overestimating associations due to pre-existing beliefs or exposures in that subgroup.

Toronto Notes 2023 – Epidemiology:

“Selection bias occurs when participants are not representative of the general population, as in recruitment from disease-specific support groups.”

MCCQE1 Objectives (Population Health > 65-2: Study Design and Appraisal):

“Candidates must recognize sources of bias in epidemiologic studies, including selection bias due to non-representative recruitment.”

Recall bias (D) is more of a concern in retrospective studies. Sponsorship (B) may create perception bias but is not a flaw in methodology itself. Standard error reporting (A) is normal. Not accounting for confounders (E) matters but recruitment source is more directly biasing.

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One of the strongest modifiable risk factors for postoperative delirium in older adults is exposure to anticholinergic medications (e.g., diphenhydramine, certain antidepressants). Avoiding these can reduce delirium risk.

Toronto Notes 2023 – Geriatrics, “Delirium Prevention”:

“Avoid high-risk medications including anticholinergics, benzodiazepines, and narcotics if possible. Maintain orientation cues and adequate pain control.”

MCCQE1 Objectives (Medicine > Geriatrics > 41-1: Cognitive Impairment):

“Candidates must recognize predisposing factors for delirium and apply prevention strategies, including medication review.”

Opiates (B) should be used judiciously; untreated pain can also cause delirium. Cognitive screening (C) is helpful for baseline but does not prevent delirium. Benzodiazepines (D) increase delirium risk. Family involvement is actually helpful (E).

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TENS has been shown to be effective for managing primary dysmenorrhea when pharmacological options are contraindicated or refused. It works by interfering with pain signal transmission and increasing endorphin levels.

Toronto Notes 2023 – Gynecology, Dysmenorrhea:

“High-frequency TENS is effective in managing primary dysmenorrhea and can be considered when NSAIDs or hormonal therapies are not acceptable to the patient.”

MCCQE1 Objectives – Gynecology > Menstrual Disorders:

“Candidates must be aware of non-pharmacological interventions for dysmenorrhea, including TENS and heat therapy.”

Options D and E involve hormonal or surgical intervention. Spinal manipulation and massage (B and C) lack consistent evidence for dysmenorrhea relief.

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This presentation is classic for neuroleptic malignant syndrome (NMS), a rare but life-threatening reaction to antipsychotic drugs (particularly dopamine antagonists like risperidone). Features include hyperthermia, rigidity, altered mental status, and autonomic instability.

Toronto Notes 2023 – Psychiatry, “Neuroleptic Malignant Syndrome”:

“NMS is associated with antipsychotic use. Key features: hyperthermia, lead-pipe rigidity, altered consciousness, autonomic dysfunction. Elevated CK, leukocytosis often present.”

MCCQE1 Objectives (Psychiatry > 71-5: Adverse Effects of Psychotropics):

“Candidates must recognize and manage neuroleptic malignant syndrome and differentiate it from other drug toxicities.”

Amitriptyline (B) overdose causes anticholinergic symptoms. Lamotrigine (A) causes rash or seizures in toxicity. Lithium (D) leads to tremor, ataxia, and GI upset. Lorazepam (E) causes CNS depression, not rigidity or fever.

According to Canadian guidelines, women aged 50 to 74 at average risk for breast cancer should undergo routine screening mammography every 2 to 3 years. A great-aunt with breast cancerdoes not raise this patient's risk to high. Mammography is appropriate as she is now due for the next screen.

Toronto Notes 2023 – Population Health, “Screening Guidelines” Section:

“Routine mammography is recommended every 2 years for average-risk women aged 50 to 74. Family history in second-degree or more distant relatives (e.g., great-aunt) does not qualify for high-risk screening or MRI.”

MCCQE1 Objectives (Population Health > 97-5: Screening and Prevention):

“Candidates should apply Canadian screening recommendations including mammography for average-risk women ≥50 years old.”

Self-breast exams (C) are not recommended for screening. PET scan (D) and MRI (E) are reserved for high-risk populations or diagnostic clarification.

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The first step in evaluating a new, hot, swollen joint is arthrocentesis to rule out septic arthritis and crystal arthropathy. Joint aspiration provides fluid for microscopy, culture, and crystal analysis, which guides definitive diagnosis and treatment.

Toronto Notes 2023 – Rheumatology, Monoarthritis:

“Joint aspiration is the most important first step in evaluating monoarthritis. Septic arthritis must be ruled out before initiating any therapy.”

MCCQE1 Objectives – Internal Medicine > Rheumatology:

“Candidates should perform joint aspiration in the presence of acute monoarthritis to differentiate between septic arthritis, gout, and other causes.”

Radiography (A) and serum uric acid (B) do not establish cause acutely. Empiric antibiotics (D) and NSAIDs (E) should only be started after ruling out septic arthritis.

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Comprehensive and Detailed Explanation:

Bronchiectasis is characterized by recurrent localized pneumonia, chronic productive cough, and hemoptysis. A linear infiltrate that persists in the same area suggests localized airway damage—typical of bronchiectasis.

Toronto Notes 2023 – Respirology:

“Bronchiectasis presents with recurrent infections in the same location, productive cough, and hemoptysis. Chest X-ray may show linear opacities; high-resolution CT is diagnostic.”

MCCQE1 Objectives (Respiratory > 45-1: Chronic Respiratory Symptoms):

“Candidates must investigate recurrent pneumonias and consider bronchiectasis, especially if localized.”

Chronic bronchitis (A) presents bilaterally. Mitral stenosis (B) may cause hemoptysis but not localized infiltrates. TB (E) usually affects upper lobes. Infarction (C) is acute and not recurrent.

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Comprehensive and Detailed Explanation:

This patient has secondary amenorrhea, galactorrhea, and worsening headaches—suggestive of hyperprolactinemia, possibly due to a pituitary adenoma (prolactinoma). Visual field defects (typically bitemporal hemianopia) can result from optic chiasm compression.

Toronto Notes 2023 – Endocrinology / Reproductive Health:

“Prolactinomas may cause amenorrhea, galactorrhea, headaches, and visual field defects. Evaluate with serum prolactin and visual field testing.”

MCCQE1 Objectives (Endocrinology > 37-2: Pituitary Disorders):

“Candidates must recognize clinical signs of prolactinomas and know when to assess visual fields.”

Hirsutism (D) suggests androgen excess. Low BMI (B) can cause hypothalamic amenorrhea but wouldn’t explain galactorrhea. Nodular breast findings (A) are not related.

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Patient education is foundational in managing fibromyalgia. Understanding the chronic but non-progressive nature of the disease, reassurance, and emphasis on self-management are crucial. It helps set realistic expectations and enhances engagement in therapy.

Toronto Notes 2023 – Rheumatology, Fibromyalgia:

“Patient education is essential. Explain the nature of fibromyalgia, emphasizing that although it is chronic, it is non-deforming and can be managed through exercise, sleep hygiene, and cognitive strategies.”

MCCQE1 Objectives – Psychiatry & Rheumatology > Chronic Pain Syndromes:

“Candidates must recognize the value of education and behavioral interventions in managing functional syndromes.”

SSRIs (D) may be used if depression is present. Iron/B12 (B) are not indicated without evidence of deficiency. Cannabinoids (A) lack strong evidence in fibromyalgia.

In postmenopausal women with severe vasomotor symptoms, hormone therapy (estrogen with progesterone in women with an intact uterus) is the most effective treatment. It improves hot flashes, sleep, and mood symptoms.

Toronto Notes 2023 – Gynecology, Menopause Management:

“Combination hormone therapy is first-line for moderate to severe menopausal symptoms. Non-hormonal agents may be considered if contraindications exist.”

MCCQE1 Objectives – Gynecology > Menopause:

“Candidates must recognize the indication and benefits of hormone therapy for vasomotor symptoms in appropriate patients.”

Lifestyle changes (A) are supportive but insufficient. Primrose oil (C) lacks robust evidence. SSRIs (D) and clonidine (E) are second-line.