[Surgical treatment of aneurysms at basilar artery and posterior cerebral artery associated with moyamoya disease: a case report].

This report describes a surgical case of basilar-superior cerebellar (BA-SCA) junction aneurysm and posterior cerebral artery (PCA) aneurysm associated with moyamoya disease. A-38-year-old man in an unconsciousness state and with mild left hemiparesis was referred to our hospital. CT scan demonstrated hemorrhage in the right basal ganglia. Carotid angiograms showed stenoses at the terminal portion of the bilateral internal carotid arteries and moyamoya vessels. Left vertebral angiograms showed two aneurysms at the junction of the right superior cerebellar artery and the basilar artery and at the P1 portion of the left posterior cerebral artery. Two aneurysms were successfully clipped using the pterional approach. Bilateral encephaloduroarteriosynangiosis (EDAS) was also performed for the treatment of Moyamoya disease. Postoperative angiograms revealed complete clipping of the aneurysms and the postoperative course was uneventful.