No shinkei geka. Neurological surgery
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Review Case Reports
[Posterior cerebral aneurysm associated with complete occlusion of the middle cerebral artery caused subarachnoid hemorrhage: a case report].
The authors reported a rare case of subarachnoid hemorrhage (SAH) from a left posterior cerebral artery (PCA) aneurysm at P2 portion associated with complete occlusion of the ipsilateral middle cerebral artery (MCA). A 65-year-old female suddenly complained of severe headache and was admitted with disturbance of consciousness. Apart from her somnolent condition, she showed no significant neurologic deficits such as aphasia or right hemiparesis. ⋯ In this paper we discussed the etiology of P2 portion aneurysm from the literature and by angiographical morphologies. In this case, the P2 portion aneurysm was considered to be produced by increase of hemodynamic stress to the PCA via fetal type PCo due to MCA occlusion. To our knowledge, this paper is the only report of PCA aneurysm associated with MCA complete occlusion brought about by SAH.