Cerebrovascular Disease USMLE Step 1 Practice Question
A 59-year-old hypertensive man presents with sudden-onset pure motor weakness of the left face, arm, and leg. Vital signs show BP 168/94 mmHg, HR 88/min, RR 16/min, temperature 37.2°C, SpO2 98% on room air. He denies aphasia, sensory loss, or visual field deficits. Brain MRI demonstrates acute ischemic changes in the right internal capsule. Which of the following is the most likely site of infarction?
Answer choices
- APosterior limb of the internal capsuleCorrect answer
- BCerebellar vermis
- CLateral medulla
- DTemporal lobe
- EOccipital cortex
- FAnterior limb of the internal capsule
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.