Related Experiment Video
Updated: May 1, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Communicating hydrocephalus accompanied by arachnoid cyst in aneurismal subarachnoid hemorrhage
Jae Young Choi1, Seung Heon Cha1, Won Ho Cho1
1Department of Neurosurgery, Medical Research Institute, Pusan National University Hospital, Busan, Korea.
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.
Related Concept Videos
Hemorrhagic Stroke ll: Pathophysiology
Hemorrhagic Stroke l: Introduction
Increased Intracranial Pressure l: Introduction
Cerebral Edema ll: Pathophysiology
Cerebral Edema l: Introduction
Increased Intracranial Pressure ll: Pathophysiology

