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Updated: Nov 16, 2025

Author Spotlight: A Single-Entry Point Endoscopic Intraventricular Approach for Third Ventriculostomy and Pineal Biopsy
Published on: June 28, 2024
Endoscopic Anatomy of Lateral and Third Ventricles: A must Know for Performing Endoscopic Third Ventriculostomy
Debabrata Sahana1, Lavlesh Rathore1, Sanjeev Kumar1
1Department of Neurosurgery, DKS Post Graduate Institute and Research Center Raipur Chhattisgarh, India.
Introduction:
Endoscopic third ventriculostomy is a safe alternative to ventriculo-peritoneal shunt for certain cases of obstructive hydrocephalus. It has the advantage of not leaving a permanent foreign body in-situ, besides preventing over-drainage and reducing chances of infection. A thorough knowledge of endoscopic anatomy of ventricles is a must for performing various endoscopic procedures.
Objective:
The aim of this study was to demonstrate the endoscopic anatomy of ventricles for educational purpose.
Procedure:
ETV is done using a zero-degree LOTTA endoscope. Right Kocher's point is usually chosen as entry site into ventricle. The scope is negotiated into third ventricle through foramen of Monro. The premammillary membrane is perforated and dilated, thereby communicating the third ventricle to the chiasmatic, interpeduncular and prepontine cisterns. The video was recorded on Karl Storz recording system. It was edited using Imovie software. Photographs labeling was done using Windows PowerPoint 2018.
Conclusion:
Endoscopic anatomy knowledge allows a neurosurgeon to perform ETV safely.
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