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Iron deficiency anemia — USMLE Step 3 MCQ

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ModerateAmbulatory Medicine / Primary CareIron deficiency anemiaUSMLE Step 3

A 61-year-old man reports fatigue. Hemoglobin is 9.8 g/dL, MCV is 70 fL, ferritin is 8 ng/mL, and stool occult blood testing is positive. He has no abdominal pain and no prior colorectal screening. Which of the following is the most appropriate next step in management?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: APerform colonoscopy

Iron deficiency anemia in an older man requires gastrointestinal blood loss evaluation, including colonoscopy.

Reference: USPSTF colorectal cancer screening, https://www.uspreventiveservicestaskforce.org/uspstf/recommendation/colorectal-cancer-screening