Transtentorial Approach for Parahippocampal Gyrus Arteriovenous Malformation Resection: 3-Dimensional Operative Video

Transtentorial Approach for Parahippocampal Gyrus Arteriovenous Malformation Resection: 3-Dimensional Operative Video

Abstract Medial temporal basal arteriovenous malformations (AVMs) have complex anatomy. They usually drain to the basal vein of Rosenthal, and arterial feeders can arise from the anterior choroidal artery and its branches, or from the posterior cerebral artery. If the AVM is more posterior in the pa...

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Bibliographic Details
Published in:Operative neurosurgery (Hagerstown, Md.) Vol. 16; no. 3; pp. E83 - E84
Main Authors: Chaddad-Neto, Feres, da Costa, Marcos Devanir Silva, Caramanti, Ricardo Lourenço, Costa, Bruno Lourenço, Silveira, Conrado Feisthauer, Echeverria, Kleber Gonzales, Campos Filho, José Maria, Centeno, Ricardo Silva
Format: Journal Article
Language:English
Published: United States Oxford University Press 01-03-2019
Wolters Kluwer Health, Inc
Subjects:
Arteriovenous malformations
CAT scans
Conferences and conventions
Diagnostic imaging
Excision (Surgery)
Headache
Hemorrhage
Intraventricular hemorrhage
Media coverage
Medical journals
Neurosurgery
Seizures (Medicine)
Surgery
Tomography
Veins & arteries
Brazil
Parahippocampal gyrus
Transtentorial approach
Brain arteriovenous malformation
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Summary:Abstract Medial temporal basal arteriovenous malformations (AVMs) have complex anatomy. They usually drain to the basal vein of Rosenthal, and arterial feeders can arise from the anterior choroidal artery and its branches, or from the posterior cerebral artery. If the AVM is more posterior in the parahippocampal gyrus, there is a predominance of arterial feeders arising from P2P or P3 segments of the posterior cerebral artery. As posterior AVMs are difficult to reach using anterior approaches, the supracerebellar transtentorial approach provides a direct pathway to the malformation, allowing better visualization and exposure of the vascular anatomy.  In this video, we present a 29-yr-old woman with a left parahippocampal AVM with P2P arterial feeders and Rosenthal basal vein drainage. The patient had three months of moderate headache and two abrupt seizures before admission. Emergency computed tomography showed intraventricular hemorrhage. Magnetic resonance imaging and cerebral angiography revealed an AVM located in the parahippocampal gyrus, posterior to pulvinar thalamus. The patient underwent microsurgical treatment in semi-sitting position using a supracerebellar and infratentorial approach with transtentorial resection. The AVM was completely removed, and the patient recovered without neurological deficits. The authors present a 3-dimensional video of the microsurgical steps required to perform a transtentorial approach for AVM resection in the parahippocampal gyrus.  The patient signed the Institutional Consent Form, which allows the use of his/her images and videos for any type of medical publications in conferences and/or scientific articles.
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ISSN:2332-4252
2332-4260
DOI:10.1093/ons/opy294