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Achalasia — USMLE Step 3 MCQ

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ModerateInternal Medicine (chronic management)AchalasiaUSMLE Step 3

A 62-year-old man has progressive dysphagia to solids and liquids, regurgitation of undigested food, and weight loss. Barium swallow shows a dilated esophagus with tapering at the gastroesophageal junction. Which of the following is the most likely diagnosis?

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Correct answer: E — Achalasia

Dysphagia to solids and liquids with bird-beak tapering on barium swallow suggests achalasia.

Reference: ACG achalasia guideline; USMLE Step 3 Content Outline