Combination of Persistent Trigeminal Artery and Ischemic Stroke: Report of 2 Cases

Persistent trigeminal artery (PTA) is the most common embryological anastomosis between the internal carotid artery (ICA) and basilar artery, which continues also in adult life.PTA is mostly asymptomatic but has also been described with comorbid conditions such as cerebrovascular pathologies.In this article, two cases of ischemic stroke accompanied by incidentally detected PTA are presented.In the first case, ischemic stroke with ipsilateral ICA hypoplasia and PTA were observed and in the second case, ischemic stroke with ipsilateral critical ICA stenosis and PTA were observed.The presence of minor infarction and low disability in both cases suggests that the presence of PTA may be associated with a better prognosis in ischemic stroke as it supports collateral circulation.