Subtemporal-transtentorial Approach for High Position Vertebral Artery-Posterior Inferior Cerebellar Artery Aneurysm: A Case Report

Abstract

The authors report a case of vertebral artery-posterior inferior cerebellar artery (VA-PICA) aneurysm in a 73-year-old woman with subarachnoid hemorrhage. The PICA originates at the vertebrobasilar junction. The aneurysm, which arose at the site of the origin of the PICA projecting laterally, was successfully clipped through a subtemporal-transtentorial approach. The patient was neurogically intact, but her postoperative life was dependent because of the weakness of her muscle power. Microsurgical anatomy and the surgical approach to the aneurysm are briefly discussed.