skip to main content

Intussusception — USMLE Step 2 CK MCQ

Instant feedback + full explanation. One question, done properly.

HardPediatricsIntussusceptionUSMLE Step 2 CK

A 20-month-old has episodic severe abdominal pain, vomiting, and currant-jelly stool. Ultrasound shows ileocolic intussusception without free air. After IV fluids, the child is hemodynamically stable, the abdomen is soft between episodes, and there are no peritoneal signs. What is the next step?

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

Reveal the answer and explanation

Correct answer: C — Perform image-guided pneumatic or hydrostatic enema reduction

Explanation lettering: E = shown as C · C = shown as E

E is correct: a stable child with imaging-confirmed ileocolic intussusception and no perforation or peritonitis should undergo radiologic reduction with air or liquid contrast. A is reserved for perforation, ischemia, peritonitis, a pathologic lead point requiring treatment, or failed enema. B risks ischemia. C evaluates malrotation rather than reducing ileocolic intussusception. D is not the standard reduction technique.

Reference: American Pediatric Surgical Association: intussusception. https://apsapedsurg.org/parents/learn-about-a-condition/f-o/