Cerebrovascular Disease USMLE Step 1 Practice Question
A 17-year-old boy is struck in the temple during a baseball game and briefly loses consciousness. He regains alertness and feels well for an hour, then becomes increasingly somnolent and develops a fixed dilated pupil. CT scan shows a biconvex hyperdense collection that does not cross suture lines. Which vessel was most likely ruptured?
Answer choices
- ABridging veins
- BSuperior sagittal sinus
- CAnterior cerebral artery
- DMiddle meningeal arteryCorrect answer
- EPosterior communicating artery
- FVertebral artery
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