title: Communicating hydrocephalus accompanied by arachnoid cyst in aneurismal subarachnoid hemorrhage.
abstract: The authors describe a case of communicating hydrocephalus accompanied by an arachnoid cyst in an aneurismal subarachnoid hemorrhage. A 69-year-old female was referred to our clinic due to the sudden onset of a headache. A head computed tomography scan demonstrated an arachnoid cyst in the right middle fossa with a mass effect and diffuse subarachnoid hemorrhage. Digital subtraction angiography then revealed a left internal carotid-posterior communicating artery aneurysm. The neck of the aneurysm was clipped successfully and the post-operative period was uneventful. However, two months after discharge, the patient reported that her mental status had declined over previous weeks. A cranial computed tomography scan revealed an interval increase in the size of the ventricle and arachnoid cyst causing a midline shift. Simultaneous navigation guided ventriculoperitoneal shunt and cystoperitoneal shunt placement resulted in remarkable radiological and clinical improvements.
authors.affiliation: Department of Neurosurgery, Medical Research Institute, Pusan National University Hospital, Busan, Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Choi
authors.affiliation: Department of Neurosurgery, Medical Research Institute, Pusan National University Hospital, Busan, Korea.
authors.forename: Seung Heon
authors.initials: SH
authors.lastname: Cha
authors.affiliation: Department of Neurosurgery, Medical Research Institute, Pusan National University Hospital, Busan, Korea.
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Cho
authors.affiliation: Department of Neurosurgery, Medical Research Institute, Pusan National University Hospital, Busan, Korea.
authors.forename: Jun Kyeung
authors.initials: JK
authors.lastname: Ko
keywords: Arachnoid cyst; Cerebral aneurysm; Hydrocephalus; Shunt; Subarachnoid hemorrhage
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