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Related Experiment Video

Updated: Jun 19, 2026

Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)

Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)

Published on: December 16, 2021

Underlying venous pathology causing perimesencephalic subarachnoid hemorrhage.

Jaejoon Lee¹, Eun-Mi Koh, Chin-Sang Chung

¹Department of Medicine, Samsung Medical Centre, Seoul, Republic of Korea.

The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques

|October 17, 2009

Summary

Perimesencephalic subarachnoid hemorrhage (PSH) may stem from venous system issues. Our cases suggest cerebral venous thrombosis and venulitis as potential causes for PSH.

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Published on: August 30, 2020

Area of Science:

Neurology
Vascular Neurology
Neuroradiology

Background:

Perimesencephalic subarachnoid hemorrhage (PSH) is a subtype of subarachnoid hemorrhage with a generally favorable prognosis.
The exact cause of PSH remains unclear, prompting investigation into less common etiologies.
This study explores a potential link between venous system abnormalities and PSH.

Observation:

Three patients presented with PSH and distinct venous system pathologies.
Case 1: PSH with cerebral venous thrombosis and hemorrhagic infarct.
Cases 2 & 3: PSH associated with Behçet's disease, a condition known to affect cerebral venules.

Findings:

Cerebral angiography in one patient revealed widespread cerebral venous thrombosis.
Two patients had PSH in the context of Behçet's disease, indicating cerebral venulitis.
These findings suggest that venous system dysfunction can lead to PSH.

Implications:

The results propose that venous system pathology is a significant factor in PSH development.
Understanding these venous origins could refine diagnostic approaches to PSH.
Further research into venous abnormalities may elucidate the pathophysiology of PSH.