Thrombosed Large Distal Posterior Inferior Cerebellar Artery Aneurysm Mimicking an Infratentorial Ependymoma
Figure 2
Operative photographs showing a well-encapsulated lesion upon lateral retraction of the cerebellar hemispheres ((a); asterisk, inferior medulla). Further dissection revealed a large aneurysm of the left distal PICA telovelotonsillary segment ((b), (c); blue arrowhead, PICA). Subsequent clipping of the aneurysm neck was performed with preservation of the PICA trunk ((c); blue arrowhead, PICA).
