An Unusual Case of a Thrombosed Giant Distal PICA Aneurysm Simulating a Large Cavernous Angioma. |
Dong Ho Lim, Shin Jung, Tae Young Jung, Tae Sun Kim |
Department of Neurosurgery, Chonnam National University, Hwasun Hospital & Medical School, Hwasun, Korea. sjung@chonnam.ac.kr |
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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. |
Key Words:
Posterior inferior cerebellar artery (PICA); Thrombosed giant aneurysm; Cavernous angioma |
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