Artery, Posterior Inferior Cerebellar

The posterior inferior cerebellar artery, AKA PICA, normally originates from the intracranial VA (V4). In some cases, the PICA could be absent with a big AICA.


This patient presented with cerebellar IPH with IVH. DSA showed diffuse vascular irregularities, such as the BA and left AICA, without an obvious cause for the hemorrhage. Interestingly, there is an absence of bilateral PICAs.

(A): Towne's view, right VA injection.
(C): Water's view, left VA injection.