72-year-old Man in Surgery — 72yo Man | Neurosurgery | SMLE Q#928
SMLE Question #928
Surgery
Neurosurgery
Last updated: February 2026
A 72-year-old man falls down a flight of stairs. He is initially awake but becomes progressively drowsy. In the emergency department, he is difficult to arouse and localizes pain on the right. Examination shows a dilated, poorly reactive left pupil and right-sided weakness. A non-contrast head CT demonstrates a biconvex (lens-shaped) hyperdense extra-axial collection over the left temporoparietal region. Which artery is most likely injured?
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