Abstract:

The disability and mortality rates of posterior circulation aneurysms are higher than those of aneurysms in other areas. The incidence rate of fatal rebleeding in the acute phase of the first ruptured aneurysm of the posterior inferior cerebellar artery （PICA） is extremely high. Microsurgical craniotomy and clipping of the aneurysm is an effective surgical treatment for PICA aneurysms. Early surgical treatment is of great significance for improving the prognosis of patients.

Key words: Cerebral aneurysm, Subarachnoid hemorrhage, Posterior inferior cerebellar artery, Craniotomy surgery