The Choroidal and Nodular Branches of the Posterior Inferior Cerebellar Artery

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Abstract
Radiographs of 10 autopsy specimens demonstrated anatomy of choroidal and nodular branches of the posterior inferior cerebellar artery. The nodular branches with posterior displacement, as seen in 5 of 12 medulloblastomas, were of diagnostic value in tumors originating in or invading the inferior vermis. Choroidal branches were enlarged in 3 medulloblastomas and 1 choroid plexus papilloma, suggesting considerable significance in diagnosis of fourth ventricle tumors. These arterial branches were not definitely visualized in 60 normal vertebral angiograms nor in another 60 cases with other intracranial expanding lesions.

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