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CC BY 4.0 · Indian Journal of Neurotrauma 2023; 20(02): 148-150
DOI: 10.1055/s-0042-1759870
Case Report

A Case of Quadrigeminal Variant of Perimesencephalic Nonaneurysmal Subarachnoid Hemorrhage

Heena Dobhal 
1   Neurosurgery Department, Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
,
Sanjog Lalsinbhai Chandana
1   Neurosurgery Department, Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
,
A.K. Singh
2   Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
,
H.C. Pathak
2   Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
,
A.M. Thakur
1   Neurosurgery Department, Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
,
K.B. Saraswat
1   Neurosurgery Department, Max Institute of Neuroscience Department, Max-Dehradun, Dehradun, Uttarakhand, India
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Abstract

The incidence of perimesencephalic subarachnoid hemorrhage (PMSAH) is rare, 0.5 in 100,000 adults. It comprises 5 to 10% of all SAHs and approximately 33% of all nonaneurysmal SAH. Quadrigeminal SAH is a variant of perimesencephalic nonaneurysmal subarachnoid hemorrhage (PMNASAH) that is not well described in the literature. It may comprise up to one-fifth of PMNASAH cases and carries a similar benign prognosis. This variant of PMSAH is characterized by blood centered in the quadrigeminal cistern and limited to the superior vermian and posterior perimesencephalic cisterns. Noncontrast computed tomography of the brain is the initial investigation of choice, while four-vessel cerebral angiogram is the gold standard for the diagnosis of SAH.

We report a case at our institute.

Keywords

cerebral angiography - perimesencephalic - subarachnoid hemorrhage - quadrigeminal cistern - nonaneurysmal SAH


Publication History

Article published online:
27 December 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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