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Double origin of the posteroinferior cerebellar artery: angiographic anatomy and endovascular treatment of concurrent vertebrobasilar dissection.

Authors
Type
Published Article
Journal
Neurosurgery
Publication Date
Volume
61
Issue
5 Suppl 2
Identifiers
DOI: 10.1227/01.neu.0000303976.22054.9d
PMID: 18091238
Source
Medline

Abstract

The cranial and caudal channels of DOPICA mainly arise at the levels of the intracranial and atlantooccipital spaces, respectively. Treatment for a ruptured dissection involving the PICA or a vertebral artery of PICA origin is challenging because of the fear of PICA territorial infarction. In such a case, the presence of DOPICA allows internal trapping of a dissecting lesion with reduced risk, because the other channel functions as an alternative flow-maintaining route.

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