Ipsilateral Horner syndrome indicates a cerebrovascular accident (CVA) occurring in the
A)anterior spinal artery.
B)internal or middle cerebral artery.
C)posterior inferior cerebellar artery.
D)vertebral or basilar arteries.
E)anterior portion of the pons.

Question

Quizplus · Accepted Answer

The posterior inferior cerebellar artery supplies the lateral and posterior portion of the medulla. A CVA involving this artery can produce a neurologic sign of ipsilateral Horner syndrome in the eye.

Ipsilateral Horner Syndrome Indicates a Cerebrovascular Accident (CVA) Occurring in the