J Korean Neurosurg Soc.  2008 Mar;43(3):155-158. 10.3340/jkns.2008.43.3.155.

An Unusual Case of a Thrombosed Giant Distal PICA Aneurysm Simulating a Large Cavernous Angioma

• Lim DH
• Jung S
• Jung TY
• Kim TS

• KMID: 2067323
• DOI: http://doi.org/10.3340/jkns.2008.43.3.155

Abstract

A 64-year-old woman was referred to our hospital with a one-month history of progressive headache. Magnetic resonance imaging (MRI) showed a hemorrhagic mass adjacent to the left inferior cerebellar hemisphere associated with a peripheral rim of signal void. Angiography demonstrated an avascular mass and the provisional diagnosis was a large cavernous angioma in the cerebellum. Intraoperative findings revealed a thrombosed giant aneurysm of the left distal posterior inferior cerebellar artery (PICA). We report an unusual case of a completely thrombosed giant aneurysm simulating a large cavernous angioma in the cerebellum. The cerebellar cisternal location of the mass may be a clue for the pre-operative diagnosis of an aneurysm.

Keyword

Posterior inferior cerebellar artery (PICA); Thrombosed giant aneurysm; Cavernous angioma

MeSH Terms

Aneurysm
Angiography
Arteries
Caves
Cerebellum
Female
Headache
Hemangioma, Cavernous
Humans
Magnetic Resonance Imaging
Middle Aged
Pica