Neurology Shelf Practice Questions - NBME Clinical Science Subject Exam Clinical Neurology Exam

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A 63-year-old woman with diabetes and hypertension awakens with pure right face, arm, and leg weakness. Sensation, language, visual fields, and cortical function are intact. MRI shows a small infarct in the left posterior limb of the internal capsule. What is the most likely mechanism?

Lipohyalinosis of penetrating arteries Embolus from a carotid plaque to the occipital cortex Rupture of an anterior communicating artery aneurysm Inflammatory demyelination of periventricular white matter

Correct Answer:

Lipohyalinosis of penetrating arteries

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