Weill Medical College of Cornell University

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• About Minimally Invasive Surgery
• Recent Publications
• Arachnoid Cyst Treatment
• Colloid Cyst Resection
• Endoscopic Cyst Fenestration
• Endoscopic Third Ventriculostomy (ETV)
• Endoscopic Tumor Biopsy
• Endoscopic Transsphenoidal Surgery
• Pituitary Tumor Treatment
• About Interventional Neuroradiology
• Acute Stroke Revascularization
• Aneurysm Treatment
• Arteriovenous Malformation Closure
• Carotid Angioplasty and Stenting
• Cerebrospinal Angiography
• Retinoblastoma Treatment
• Tumor Embolization
• Skull Base Surgery

Endoscopic Third Ventriculostomy (ETV)

The procedure is performed through a small incision (approximately 1 inch) behind the hairline. From this site, the endoscope is inserted into the ventricular compartment of the brain and then navigated into the third ventricle. The floor of this compartment is then fenestrated, or opened. The endoscope is then removed and the wound is closed. The procedure is performed in approximately 30 minutes and patients can return home the following day. MRI scans of the brain are done intermittently to insure that the fenestration remains open.