title: Anterior communicating artery aneurysm not visualized by angiography. Report of two successfully operated cases.
mesh_terms: D000328:Adult; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000601:surgery*; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged