National University Hospital

Rare circle of Willis variants associated with multiple intracranial aneurysms and subarachnoid hemorrhage

Rationale: Subarachnoid hemorrhage from a ruptured intracranial aneurysm is a type of stroke with high rates of mortality and disability, and the prevalence of aneurysm formation increases in the presence of Circle of Willis variants. Patient concerns: A 64-year-old man with a hi...