MCCQE Exam Dumps - Medical Council of Canada Qualifying Examination Part 1 Exam

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.

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

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.

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

Radiation proctitis is a well-known complication of pelvic radiation therapy (e.g., for prostate cancer). It presents months to years after treatment with rectal bleeding, tenesmus, and mucosal ulceration on colonoscopy.

Toronto Notes 2023 – Gastroenterology, “Radiation-Induced GI Injury”:

“Radiation proctitis presents with rectal bleeding, tenesmus, urgency. Colonoscopy shows pale, friable mucosa, ulcerations, and telangiectasia.”

MCCQE1 Objectives (Gastroenterology > 47-2: GI Bleeding and Complications):

“Candidates must recognize radiation proctitis based on history of radiation and characteristic endoscopic findings.”

Ulcerative colitis (B) usually starts younger and is more diffuse. Diverticulosis (C) affects the left colon and causes painless bleeding. Recurrent prostate cancer (D) and rectal cancer (E) would show mass or infiltration.

Multiple sclerosis (MS) is most likely because the patient has vertigo-like symptoms plus objective central neurologic signs : optic disc pallor (suggesting prior optic neuritis with optic atrophy), generalized hyperreflexia (upper motor neuron involvement), and nystagmus (can be central when accompanied by other CNS findings). MCCQE objectives emphasize differentiating peripheral from central causes of vertigo. Peripheral disorders (labyrinthitis, Ménière disease) typically present with vertigo and nausea but do not cause optic nerve abnormalities or diffuse hyperreflexia . Acoustic neuroma can cause vestibular symptoms but usually features progressive unilateral hearing loss/tinnitus and does not explain optic disc pallor and generalized UMN signs. Prolactinoma causes endocrine symptoms (galactorrhea, amenorrhea, infertility) and may cause bitemporal hemianopia from chiasmal compression, not intermittent vertigo with UMN findings. MS commonly affects young women and can produce brainstem/cerebellar involvement (vertigo, nystagmus) and optic nerve involvement, with symptoms separated in time, matching a 6-month intermittent course.

Refusing care based on sexual orientation constitutes discrimination under the Canadian Charter of Rights and Freedoms and violates professional standards. Physicians must not deny care based on personal bias or prejudice.

Toronto Notes 2023 – ELOM, Equity in Care and Professionalism:

“Denying care based on sexual orientation violates both human rights legislation and professional obligations. Physicians must ensure equitable access for all patients.”

MCCQE1 Objectives – ELOM > Professionalism and Patient Rights:

“Candidates must act in accordance with patients’ rights to equitable, non-discriminatory access to care regardless of race, gender, or sexual orientation.”

Referral (Option B) does not excuse discriminatory refusal. Personal discomfort or inexperience (Options D and E) do not justify discrimination.

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

This patient has signs suggestive of decompensated liver cirrhosis (ascites, peripheral edema, low-normal BP, alcohol use, abdominal distension). Sodium restriction is the cornerstone of first-line management to prevent fluid retention in cirrhotic ascites.

Toronto Notes 2023 – Gastroenterology, “Cirrhosis and Ascites” Section:

“Sodium restriction ( < 2 g/day) is the most important non-pharmacologic management for ascites. Fluid restriction is added only in cases of severe hyponatremia.”

MCCQE1 Objectives (Internal Medicine > 76-5: Liver Disease):

“Candidates must manage ascites conservatively using sodium restriction, with diuretics added as needed.”

Lactulose (E) is used for hepatic encephalopathy, not ascites. Ramipril (B) may worsen renal function in cirrhosis. Nadolol (C) is used for variceal bleeding prophylaxis. Compression stockings (D) are not helpful in ascites-related edema.

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

Polyhydramnios is the most likely diagnosis given the rapid increase in abdominal girth , maternal shortness of breath , and a symphysis-fundal height (45 cm) significantly greater than expected for 27 weeks’ gestation. MCCQE objectives emphasize that fundal height should approximately correspond (±2–3 cm) to gestational age in weeks after 20 weeks. A discrepancy this large suggests excessive amniotic fluid volume. Polyhydramnios leads to uterine overdistension, which explains dyspnea and rapid abdominal enlargement. Twin pregnancy can cause a large fundal height, but early ultrasound confirmation of gestational age would likely have identified multiple gestation. Partial mole is typically associated with abnormal bleeding and abnormal fetal findings. Fetal macrosomia increases fundal height but usually not to this degree at 27 weeks and is more gradual. Ovarian tumor with ascites is less likely in a confirmed intrauterine pregnancy with normal fetal heart rate. Polyhydramnios is commonly associated with maternal diabetes or fetal anomalies affecting swallowing and requires further evaluation with ultrasound and glucose screening.

In a patient with known diverticular bleeding and no red flags (e.g., weight loss, anemia, family history), repeating colonoscopy is not required. Diverticular bleeding is typically self-limited. Colonoscopy within the past few years with clear findings suffices.

Toronto Notes 2023 – Gastroenterology, Lower GI Bleed:

“Patients with known diverticulosis and self-limited bleeding who have had prior complete colonoscopy do not require repeat endoscopy unless symptoms recur or persist.”

MCCQE1 Objectives – Internal Medicine > Gastroenterology:

“Candidates must recognize when no further invasive investigation is necessary in elderly patients with known benign findings and resolved symptoms.”

Option E is considerate but not clinically necessary for independent patients. Options A, B, and D are not indicated in resolved, low-risk cases.