Abstract
We report the case of a 59 year-old female who had a stump of middle cerebral artery occlusion mimicking a ruptured aneurysm. She was admitted to to our hospital. A computed tomography scan showed moderate subarachnoid hemorrhage (SAH) in the left Sylvian fissure. From preoperative neuroradiological findings, it was suspected that an aneurysm with a cylinder-like dome occurred at the bifurcation of the left middle cerebral artery (MCA) with occlusion from the beginning of left superior trunk of MCA and then ruptured.
In operation, however, an aneurysm was not found anywhere. An aneurysmal opacification on preoperative angiograms proved to be a stump of the occluded superior trunk. The cause of SAH was unknown. She was discharged about 1 month later without any neurological deficits. The cylinderlike dome on preoperative angiograms may suggest a stump of an occluded artery.
