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Updated: May 27, 2026

Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Ruptured cerebral aneurysm associated with a persistent primitive trigeminal artery variant
Takahiro Yamamoto1, Yu Hasegawa, Yuki Ohmori
1Department of Neurosurgery, Faculty of Life Sciences, Kumamoto University School of Medicine, 1-1-1, Honjo, Kumamoto 861-8556, Japan.
Ruptured aneurysms associated with primitive trigeminal artery variants (PTAVs) are rare. Surgical intervention for these complex cerebral aneurysms can lead to successful outcomes, as demonstrated in this case.
Area of Science:
- Neuroscience
- Vascular Neurology
- Cerebrovascular Anatomy
Background:
- Primitive trigeminal artery variants (PTAVs) represent rare persistent fetal anastomoses connecting the internal carotid artery to the vertebrobasilar system.
- These anomalous vessels typically drain into cerebellar arteries, bypassing the basilar artery.
Observation:
- An 82-year-old female presented with subarachnoid hemorrhage.
- Imaging revealed bilateral PTAVs and two aneurysms on the left PTAV, one saccular and one fusiform.
- The patient underwent surgical treatment for the ruptured aneurysm.
Findings:
- The case highlights a rare instance of subarachnoid hemorrhage caused by a ruptured aneurysm originating from a PTAV.
- Successful surgical management of both saccular and fusiform aneurysms associated with PTAV was achieved.
Implications:
- This case underscores the potential for successful surgical management of rare cerebral aneurysms associated with PTAV.
- It emphasizes the importance of recognizing and addressing these complex vascular anomalies in clinical practice.
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