Persistent trigeminal artery incidentally found in a patient with brain posterior system infarction: a rare case report

Year 2023, , 220 - 222, 12.01.2023

Adil Aytaç , Yunus Yılmazsoy

https://doi.org/10.32322/jhsm.1196350

Abstract

The persistent trigeminal artery (PTA) is a persistent, primitive, embryonic anastomosis that provides the blood flow between the vertebro-basilar system and the carotid system. The presence of PTA anastomosis may create an advantage by providing collateral circulation during a stroke as in cases of leptomeningeal collaterals, external-internal carotid artery anastomoses, and the polygon of Willis. However, patients with this variation are more susceptible to the development of non-occlusive posterior arterial system infarction when they experience hypotension attacks. In the literature, there are only few case reports on non-occlusive posterior system infarction associated with PTA variation. In this case report, we present to an 81-year-old patient with posterior system infarct findings and persistent trigeminal artery variation.

Keywords

Persistent trigeminal artery, posterior arterial system infarction, hypotension

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