RT Journal Article SR Electronic T1 Intracystic Hemorrhage of the Middle Fossa Arachnoid Cyst and Subdural Hematoma Caused by Ruptured Middle Cerebral Artery Aneurysm JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1284 OP 1286 VO 20 IS 7 A1 Huang, Dong A1 Abe, Toshi A1 Kojima, Kazuyuki A1 Tanaka, Norimitsu A1 Watauabe, Mitsuo A1 Ohkura, Akio A1 Nishimura, Hiroshi A1 Hayabuchi, Naofumi A1 Norbash, Alexander M. YR 1999 UL http://www.ajnr.org/content/20/7/1284.abstract AB Summary: We report a case of a cerebral aneurysm arising from the bifurcation of the left middle cerebral artery that ruptured into a left middle cranial fossa arachnoid cyst, associated with acute subdural hematoma. We discuss the relationships of aneurysm, arachnoid cyst, and subdural hematoma.