skip to main content

Cauda equina syndrome — ABFM Board MCQ

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

ModerateNeurologyCauda equina syndromeABFM Board

A 55-year-old man has low back pain, new urinary retention, saddle anesthesia, and bilateral leg weakness. Temperature is normal and he has no cancer history. Which of the following is the most likely diagnosis?

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

Reveal the answer and explanation

Correct answer: D — Cauda equina syndrome

Urinary retention, saddle anesthesia, and bilateral neurologic deficits are red flags for cauda equina syndrome. Emergency MRI and urgent spine consultation are required.

Reference: ACP Low Back Pain Guideline