A rare occurrence of persistent hypoglossal artery and its clinical significance.

Persistent hypoglossal artery (PHA) is an embryological vascular variation mostly originating from the internal carotid artery. The presence of PHA has been associated with the incidence of some diseases such as cerebral ischaemia, atherosclerosis, and aneurysm. Here, a very rare case of PHA that was discovered incidentally by digital subtraction angiography in Turkey is reported. Endovascular stenting was not performed for this patient. Also, its clinical importance is discussed.