Related Experiment Video
Updated: Sep 29, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
De novo cerebral aneurysms manifesting as repeated subarachnoid hemorrhage and cerebral ischemic stroke--case report
Hirokatsu Osawa1, Kazuhiro Fukui, Goro Otsuka
1Department of Neurosurgery, Nagoya Ekisaikai Hospital, Japan.
A 29-year-old man suffered repeated subarachnoid hemorrhage and cerebral ischemic stroke over a period of 6 years. Cerebral angiography at each episode disclosed development of multiple de novo aneurysms at the bilateral middle cerebral arteries (MCAs), internal carotid arteries, right anterior cerebral artery, and right vertebral artery. Two of the ruptured aneurysms were treated by surgical and endovascular treatment, but he died of the effects of rupture of a de novo right MCA aneurysm. Histological examination at autopsy disclosed marked degenerative changes in all layers of the cerebral vessels, which were probably congenital in origin.
A 29-year-old man suffered repeated subarachnoid hemorrhage and cerebral ischemic stroke over a period of 6 years. Cerebral angiography at each episode disclosed development of multiple de novo aneurysms at the bilateral middle cerebral arteries (MCAs), internal carotid arteries, right anterior cerebral artery, and right vertebral artery. Two of the ruptured aneurysms were treated by surgical and endovascular treatment, but he died of the effects of rupture of a de novo right MCA aneurysm. Histological examination at autopsy disclosed marked degenerative changes in all layers of the cerebral vessels, which were probably congenital in origin.
Related Concept Videos
Hemorrhagic Stroke l: Introduction
Hemorrhagic Stroke ll: Pathophysiology
Stroke: Introduction and Types
Ischemic Stroke l: Introduction
Ischemic Stroke ll: Pathophysiology
Transient Ischemic Attack l: Introduction
