Rare anatomical variations of persistent trigeminal artery in two patients with non-aneurysmal subarachnoid hemorrhage
Related Experiment Video
Updated: May 28, 2026

Creation of Two Saccular Elastase-Digested Aneurysms with Different Hemodynamics in One Rabbit
Published on: April 15, 2021
Edgar A Samaniego1, Guilherme Dabus, Vincenzo Andreone
1Baptist Cardiac and Vascular Institute, 8900 N Kendall Drive, Miami 33176, Florida. edgarsama@gmail.com
Abstract:
Carotid-basilar anastomoses are remnants of the fetal circulation and although rare, they may become symptomatic and should be recognized during cerebral angiography. Two patients are described with non-aneurysmal subarachnoid hemorrhage and persistent trigeminal arteries (PTA) found on cerebral angiography. In the first patient, the PTA ended in the anterior inferior cerebellar artery (AICA) and posterior inferior cerebellar artery. The second patient had a PTA terminating in the AICA and superior cerebellar artery. These rare anatomical PTA variants should be recognized on cerebral angiography.
Related Concept Videos
Hemorrhagic Stroke l: Introduction
Arteries of the Head and Neck
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Hemorrhagic Stroke ll: Pathophysiology
Aneurysm I: Introduction

