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Updated: Oct 10, 2025

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
Extremely tortuous superior cerebellar artery mimicking an aneurysm
Megumi Matsuda1, Hideki Endo1, Kohei Ishikawa1
1Department of Neurosurgery, Nakamura Memorial South Hospital, Sapporo, Hokkaido, Japan.
Background:
An extremely tortuous superior cerebellar artery is a rare anomaly. We report a case of an extremely tortuous superior cerebellar artery mimicking an aneurysm.
Case Description:
A 77-year-old woman was initially diagnosed with unruptured cerebral aneurysm at the right basilar artery-superior cerebellar artery junction by magnetic resonance angiography. Catheter angiogram revealed that there was no apparent aneurysm at the basilar artery-superior cerebellar artery junction and the lesion was actually an extremely tortuous superior cerebellar artery.
Conclusion:
Although an extremely tortuous superior cerebellar artery is rare, it should be considered when examining other vascular lesions.
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