2025-11-272025-11-27http://hdl.handle.net/2263/105584Clinical history : A 63 year old female who has been treated for hypertension.4 months prior to death, the patient complained of headache and poor vison.Autopsy findings : 1. A large aneurysm of the tricuspid valve of the internal carotid artery on the left side.2. Subarachnoid bleeding.3. Atherosclerosis with arteriosclerosis.Diagnosis: Aneurysm of the trifurcation of the left internal carotid artery