Nervous and Senses Disorders · USMLE Step 1

A patient with a stroke loses pain and temperature sensation on the contralateral body and ipsilateral face. Which artery is most likely involved?

  1. Anterior cerebral artery
  2. Posterior cerebral artery
  3. Posterior inferior cerebellar artery
  4. Middle cerebral artery
Show answer and explanation

Correct answer: Posterior inferior cerebellar artery

PICA infarction produces Wallenberg syndrome, which includes loss of ipsilateral facial sensation and contralateral body sensation.

Difficulty: Medium Question 10 of 20

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