Abstract
A 52-year-old male was presented with left hemiparesis. Magnetic resonance imaging revealed right frontal lobe infarction. Computed tomography and digital subtraction angiography revealed a large partial thrombosed aneurysm of the distal right anterior cerebral artery and occlusion of the right pericallosal artery. Operation views showed the mechanical obstruction of right pericallosal artery induced by mass effect of the thrombosed aneurysm. The aneurysm was dome-clipped, and the residual neck was coated 23 days after admission. The patient is doing well 6 months after operation, and the residual neck regrowth is not recognized, but careful follow-up must be necessary in future.
