MR appearance of the persistent hypoglossal artery.

Abstract

We describe the MR appearance of the persistent hypoglossal artery incidentally found in a case of known glioblastoma multiforme. On the spin-echo images, an abnormal tubular structure of low intensity penetrating the hypoglossal canal was recognized. MR angiography showed its vascular nature and the anomalous vessel connecting the internal carotid and basilar arteries.