[Successful treatment of a ruptured anterior cerebral artery dissecting aneurysm].

Dissection with subarachnoid hemorrhage is an unstable and dangerous condition because of the high rate of rerupture. The mortality of dissecting pseudoaneurysm is the worst among cerebral aneurysms. Dissecting pseudoaneurysms causing subarachnoid hemorrhage should be treated by endovascular intervention in the acute phase in most of the cases.