MCCQE Medical Council of Canada Qualifying Examination Part 1 Exam Free Practice Exam Questions (2026 Updated)

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

The most important factor in determining the surveillance interval in Barrett esophagus is the presence and grade of dysplasia (e.g., none, low-grade, high-grade). High-grade dysplasia requires more frequent monitoring or intervention due to the risk of progression to esophageal adenocarcinoma.

Toronto Notes 2023 – Gastroenterology, Barrett Esophagus:

“Surveillance intervals depend on histologic findings. No dysplasia: q3–5 years; low-grade: q6–12 months; high-grade: consider endoscopic resection or ablation.”

MCCQE1 Objectives – Internal Medicine > Gastroenterology:

“Candidates must identify the risk of progression in Barrett esophagus and apply appropriate surveillance strategies based on dysplasia.”

Length of the segment (A) may influence risk but not surveillance frequency alone. Other options (B, C, E) are less determinative.

====================================================

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.

====================================================

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.

====================================================

Comprehensive and Detailed Explanation:

An estimated fetal weight below the 5th percentile at 30 weeks is concerning for intrauterine growth restriction (IUGR). This warrants prompt evaluation of fetal well-being via biophysical profile and Doppler assessment. The patient should be referred for further fetal assessment immediately to rule out placental insufficiency or other complications.

Toronto Notes 2023 – Obstetrics, “Fetal Growth Restriction”:

“EFW < 10th percentile, especially < 5th, warrants further evaluation including Doppler studies and biophysical profile. Immediate assessment is warranted to determine fetal well-being.”

MCCQE1 Objectives (Obstetrics > 80-4: Antepartum Surveillance):

“Candidates must initiate urgent assessment in cases of abnormal fetal growth to reduce perinatal morbidity.”

Delaying care (B) is inappropriate. Reassurance (A) is unsafe. ASA (D) is preventative, not corrective. Doppler (E) is important but should be coordinated through obstetrical triage.

====================================================

Nonprescription opioid use during opioid agonist therapy is not uncommon. The response should be supportive and not punitive. Increasing the frequency of follow-up enhances monitoring, supports adherence, and prevents relapse.

Toronto Notes 2023 – Psychiatry, “Substance Use Disorders”:

“Patients who relapse during opioid agonist treatment benefit from closer monitoring and increased support, including more frequent follow-up and psychosocial interventions.”

MCCQE1 Objectives (Psychiatry > 71-5: Substance Use and Addiction):

“Candidates must manage relapses in opioid use by optimizing follow-up and support, not by discontinuing or reducing therapy prematurely.”

Tapering or discontinuing therapy (A, E) risks destabilizing treatment. Removing take-home doses (B) may be warranted later but not first. Cannabinoids (D) are not first-line adjuncts.

====================================================

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.

====================================================

Obsessive-compulsive disorder (OCD) is a chronic and often relapsing condition. MCCQE objectives emphasize that patients with severe OCD requiring hospitalization or prolonged high-dose SSRI therapy are at significant risk of relapse if medication is discontinued. This patient has remained stable for 2 years on a high dose of paroxetine after inpatient treatment, suggesting a history of more severe disease.

For moderate-to-severe or recurrent OCD, long-term or indefinite maintenance pharmacotherapy is often recommended, particularly when the patient has responded well and tolerated the medication. Abrupt discontinuation or large dose reductions (e.g., 50%) increase the risk of relapse and discontinuation syndrome, especially with paroxetine, which has a short half-life. Switching to another SSRI is unnecessary when the current medication is effective and tolerated. Supportive psychotherapy alone is generally insufficient for patients with previously severe OCD.

Therefore, the most appropriate recommendation is to maintain the current dosage , while discussing risks and benefits and reassessing periodically.

The clinical picture suggests an obstructive anomaly of the female reproductive tract, such as imperforate hymen or vaginal outflow tract obstruction, leading to hematocolpos. The first essential step is physical examination of the external genitalia.

Toronto Notes 2023 – Pediatrics and Gynecology, “Amenorrhea” Section:

“In girls with primary amenorrhea and cyclic abdominal pain, perform an external genital exam to rule out obstructive anomalies (e.g., imperforate hymen or transverse vaginal septum). Examination should always precede imaging.”

MCCQE1 Objectives (Pediatrics > 78-3: Puberty and Menstrual Disorders):

“Candidates must evaluate delayed menarche with physical exam, including inspection of the genitalia to rule out anatomic obstruction.”

Pelvic ultrasound (D) is helpful but should follow physical exam. Radiography (B), hCG (C), and urinalysis (E) are not primary steps in evaluating amenorrhea with a mass.

====================================================

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.

====================================================

Given the lack of prenatal care, the mother ' s withdrawal, and prior involvement of child protection services, a newborn drug screen is warranted to assess for possible in utero exposure. This is part of the safety assessment.

Toronto Notes 2023 – Pediatrics, Newborn Assessment:

“Infants born to mothers with no prenatal care or prior social concerns should undergo a full newborn screening, including toxicology if indicated.”

MCCQE1 Objectives – Pediatrics > Newborn Care and Social Issues:

“Candidates must identify social risk factors and initiate appropriate newborn evaluations, including toxicology screens when substance use is suspected.”

The mother was previously immune to hepatitis B, so (A) is not immediately required. Skin-to-skin care (D) is beneficial but secondary to screening in this context. Donor milk (B) is not indicated unless breastfeeding is contraindicated.

====================================================

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.

====================================================

Calculating food-specific attack rates (i.e., number of people who became ill after eating a particular food divided by the total number who ate that food) is the most effective method to identify the probable source of infection in a known cohort outbreak.

Toronto Notes 2023 – Public Health, Outbreak Investigations:

“Foodborne outbreaks are best analyzed using food-specific attack rates to determine associations between individual foods and illness.”

MCCQE1 Objectives – Preventive Medicine > Epidemiologic Principles:

“Candidates must use epidemiologic tools, such as attack rates, to identify probable sources during outbreak investigations.”

Cohort study (C) is also acceptable but more time-intensive. Stool and food cultures (B, D) confirm the pathogen but not the source. HACCP (E) is a preventive method, not a tool for outbreak investigation.

====================================================

This child experienced a first unprovoked generalized tonic-clonic seizure that resolved spontaneously and now has a normal neurologic examination and stable vital signs. MCCQE objectives emphasize that the immediate priority after a first seizure is to identify reversible metabolic causes , particularly hypoglycemia and electrolyte abnormalities (e.g., hyponatremia, hypocalcemia). Therefore, urgent serum electrolytes (and glucose) are indicated.

Neuroimaging (CT or MRI) is not urgently required in a neurologically normal child without focal deficits, trauma, persistent altered consciousness, or signs of increased intracranial pressure. MRI may be arranged later for further evaluation if clinically indicated. Electroencephalography is useful in outpatient follow-up to assess seizure type and recurrence risk but is not an emergency test. Lumbar puncture is reserved for suspected central nervous system infection (e.g., fever, meningeal signs, altered mental status), which are absent here.

Thus, immediate laboratory evaluation for metabolic derangements is the appropriate urgent investigation.

Comprehensive and Detailed Explanation:

Providing clinical advice (particularly treatment advice) without formally seeing or evaluating the patient creates a physician-patient relationship, potentially establishing a duty of care. If the advice leads to harm, you could be found liable, even if you never saw the patient directly.

Toronto Notes 2023 – Legal Medicine:

“Giving specific medical advice about diagnosis or treatment may imply a physician-patient relationship and establish duty of care.”

MCCQE1 Objectives (ELOM > 90-2: Legal Risk Management):

“Candidates must understand that liability can arise from informal consultations where medical advice is given.”

Providing advice (D) is riskier than simply hearing about a case or patient (A, C). Recommending consultation (B) does not establish duty of care. Not seeing the patient (E) does not automatically shield from liability if treatment advice was given.

—

This infant has evidence of urinary outflow obstruction on ultrasound. The most common cause in male infants is posterior urethral valves. Poor urinary stream is a hallmark symptom of bladder outlet obstruction in neonates.

Toronto Notes 2023 – Pediatrics, “Pediatric Urology” Section:

“Posterior urethral valves should be suspected in male infants with recurrent UTIs, hydronephrosis, and a weak urinary stream. Diagnosis is confirmed by voiding cystourethrogram.”

MCCQE1 Objectives (Pediatrics > 78-4: Urinary Tract Abnormalities):

“Candidates must identify congenital causes of urinary obstruction. Poor stream and hydronephrosis are classic features of posterior urethral valves.”

Crying with urination (E) is nonspecific. Hematuria (B) and malodorous urine (D) are common with infections. Circumcision (A) is unrelated.

====================================================

In girls with developmental disabilities, menstrual management should follow the same ethical and clinical principles as for other adolescents, emphasizing least invasive, reversible options and respect for future autonomy. Menstrual suppression may be appropriate to assist with hygiene and quality of life; however, hormonal methods are generally initiated after the onset of menarche to confirm pubertal development and exclude underlying endocrine disorders. Therefore, extended progestin-only therapy (e.g., depot medroxyprogesterone acetate) should not be started before menses begin. Hysterectomy is inappropriate as first-line management due to its irreversible nature, surgical risks, and significant ethical concerns regarding sterilization. Continuous combined oral contraceptives are not contraindicated and are commonly used for therapeutic amenorrhea. Evidence does not show consistent worsening of behavioural symptoms with appropriate hormonal suppression. Girls with developmental disabilities typically experience normal pubertal progression. MCCQE objectives emphasize patient-centered care, least restrictive interventions, ethical considerations in consent and capacity, and appropriate menstrual management strategies in adolescents with special needs.

This patient is critically unstable with severe hypoxia (SpO₂ 75% despite oxygen), central cyanosis, hypotension (no detectable blood pressure), and evidence of active vomiting—placing him at extremely high risk of airway compromise and aspiration . According to MCCQE resuscitation objectives and ABC principles, airway management is the immediate priority in a patient with respiratory failure and compromised airway protection.

Endotracheal intubation provides definitive airway control, allows suctioning of vomitus, prevents further aspiration, and enables mechanical ventilation with high-concentration oxygen. Noninvasive ventilation is contraindicated in patients with vomiting and impaired airway protection due to high aspiration risk. Chest compressions are indicated only if there is no pulse; this patient has a faint pulse. Intravenous fluids are important for hypotension but must follow airway stabilization. Nasogastric tube insertion does not address the immediate life-threatening hypoxia.

Early definitive airway control in unstable patients with hypoxemia and aspiration risk is essential to prevent cardiac arrest and improve survival outcomes.