Cavernous Sinus Meningioma: Tumor Decompression for Trigeminal Neuralgia and Anterior Tibial Artery Graft High-Flow Bypass for Brain Ischemia: 2-Dimensional Operative Video.

A 62-yr-old man with left cavernous sinus tumor presented with atypical trigeminal neuralgia refractory to medical treatment. He received Gamma Knife (Elekta) radiation for the tumor. However, the facial pain worsened after radiation.

Anterior Clinoidectomy: Intradural Step-by-Step En Bloc Removal Technique.

Objective: Anterior clinoidectomy is an important and essential skill for skull base and cerebrovascular neurosurgeons. We present a 1-piece intradural anterior clinoidectomy, providing a step-by-step description of the technique, independently of anatomic variations.

Methods: Between 2014 and 2020, 128 patients (119 women and 9 men; average age, 54.

Interhemispheric transcallosal transforaminal approach for decompression of a giant superior cerebellar artery thrombosed aneurysm: Three-dimensional operative video.

Background: Giant brain aneurysms account for approximately 5% of all intracranial aneurysms, often presenting with intraluminal thrombosis that causes a mass effect in surrounding neural structures. Although its exact growing mechanism remains unknown, they have to be treated. Despite the most recent advances in neurosurgical fields, the best treatment modality remains unknown and surgery of giant superior cerebellar artery (SCA) aneurysms still is a challenge even for the most experienced neurosurgeons, due to their deep location, surrounding perforating vessels, and intraluminal thrombosis.

Microsurgical Resection of a Left Supramarginal Gyrus AVM Causing Radionecrosis.

Late radiation necrosis is a rare entity presenting in 2.2% to 9% of radiation-treated arteriovenous malformations (AVMs). It occurs by a mean of 3 years following treatment.

Localization and Microsurgical Resection of Left Postcentral Gyrus Spetzler-Martin Grade 3 Arteriovenous Malformation by Intraoperative Neuronavigation and Tracing of Subcortical Draining Vein: 3-Dimensional Operative Video.

This 42-yr-old man presented with a history of sudden right-sided facial and right arm weakness and dysarthria. Head computed tomography showed a left frontal-parietal blood clot. An intra-arterial digital subtraction angiography demonstrated a left subcortical postcentral, Spetzler-Martin Grade 3 arteriovenous malformation (AVM) with a diffuse nidus, measuring 2.

Microsurgical Resection of Recurrent Cavernous Sinus Hemangioma by Superior and Lateral Approach: 2-Dimensional Operative Video.

This video shows the technical nuances of microsurgical resection of recurrent cavernous sinus (CS) hemangioma by superior and lateral approach.  A 77-yr-old woman presented with headache and difficulty in vision in right eye for 6 mo. She had previously undergone attempted resection of a right CS tumor in another hospital with partial removal, and the tumor had grown significantly.

Complete Microsurgical Resection of Large Retrochiasmatic Hypothalamic Craniopharyngioma by Transpetrosal Approach: 2-Dimensional Operative Video.

This two-dimensional video shows the technical nuances of complete microsurgical resection of a hypothalamic craniopharyngioma located in the retrochiasmatic region by the transpetrosal approach.  This 49-yr-old man presented with progressive fatigue, excessive sleepiness, and difficulty in vision in both eyes. He was found to have right CN 3 paralysis and bitemporal hemianopsia on neurological examination.

Bow Hunter's Syndrome: Complete Microsurgical Decompression of Vertebral Artery by Far Lateral Retrocondylar Approach: 3-Dimensional Operative Video.

This 50-yr-old man had a 15-yr history of presyncopal episodes that were precipitated by turning his head to the right, and had worsened recently. Cerebral angiogram demonstrated complete cessation of anterograde flow in left vertebral artery (VA) at the level of the C1 sulcus arteriosus while turning head to right, indicating dynamic compression at the C1 level.  Patient underwent left extreme lateral retrocondylar approach, partial C1 laminectomy and opening of the C1 foramen with complete microsurgical decompression of the VA.