Internal trapping of a ruptured vertebral artery dissecting aneurysm followed by recanalization of the trapped vertebral artery without aneurysm recurrence: case report.

A 61-year-old man presented with a ruptured vertebral artery dissecting aneurysm manifesting as severe headache, which was treated by internal trapping, and later resulted in recanalization of the affected vertebral artery without aneurysm recurrence. Computed tomography revealed subarachnoid hemorrhage caused by a dissecting right vertebral artery aneurysm located just distal to the origin of the posterior inferior cerebellar artery. The patient underwent uneventful internal trapping.

Melanotic neuroectodermal tumor of infancy in the skull: case report and review of the literature.

Background: Melanotic neuroectodermal tumor of infancy (MNTI) is a rare neoplasm that develops during the first year of life and grows rapidly. Early diagnosis and radical surgery are critical for a long-term cure. We report a rare case of MNTI in the skull and discuss the importance of the radical surgery and the long-term follow-up results.

Monitoring and preventing blood flow insufficiency due to clip rotation after the treatment of internal carotid artery aneurysms.

The authors report a case in which anterior choroidal artery (AChA) blood flow insufficiency due to aneurysm clip rotation was detected intraoperatively by motor evoked potential (MEP) monitoring and ischemia was successfully avoided. The patient had an incidentally discovered aneurysm for which occlusion of its neck was performed through a standard frontotemporal craniotomy without changing the MEP amplitude. After it was confirmed that the surrounding arteries were not stenotic, the brain retractor on the frontal lobe was released; MEP amplitude subsequently decreased.