Successful Endovascular Treatment of Ruptured Superior Cerebellar Artery Aneurysm Associated with Moyamoya Disease : A Case Report and Review of the Literature

We present a patient with moyamoya disease and a ruptured superior cerebellar artery aneurysm that was managed by endovascular embolization. A 53-year-old man with sudden onset severe headache and altered mental status was referred to our hospital. Computed tomography revealed a subarachnoid hemorrhage. Cerebral angiography showed evidence of moyamoya disease and a 7 mm saccular aneurysm at the origin of the right superior cerebellar artery. Endovascular coil embolization was performed successfully without posterior cerebral artery and superior cerebellar artery obliteration. Endovascular treatment with microcoils appear particularly safe for moyamoya patients with cerebral saccular aneurysms.