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Endoscopic Third Ventriculostomy and Pineal Biopsy from a Single Entry Point

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Middle cranial fossa endoscopy using a rigid endoscope.

S Mourgela¹, A Sakellaropoulos, S Anagnostopoulou

¹Neurosurgical Department, Agios Savas Anticancer Institute, Athens, Greece. sofiamou@otenet.gr

Minimally Invasive Therapy & Allied Technologies : MITAT : Official Journal of the Society for Minimally Invasive Therapy

|October 19, 2007

Summary

Middle cranial fossa endoscopic exploration offers a minimally invasive surgical option for trigeminal neuralgia (TN). This approach provides adequate access to the trigeminal ganglion for potential dissection of affected nerve roots.

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Area of Science:

Neurosurgery
Pain Management
Anatomy

Background:

Trigeminal neuralgia (TN), or tic douloureux, is a debilitating craniofacial pain disorder.
Characterized by severe, unilateral facial pain, its etiology is often unknown.
Conservative management is primary, with surgery reserved for refractory cases aiming for long-term pain control with minimal risk.

Purpose of the Study:

To evaluate the feasibility of middle cranial fossa endoscopic exploration for accessing the trigeminal ganglion.
To determine if this approach allows for dissection of the V2 and V3 trigeminal nerve roots, common sites for TN pain.
To assess the potential of this technique as a minimally invasive surgical option for medically refractory TN.

Main Methods:

Endoscopic exploration of the middle cranial fossa was performed in four adult cadavers.
A rigid endoscope with working channels was inserted via a burr-hole near the tragus.
The approach aimed to visualize and access the trigeminal ganglion and its V2 and V3 roots.

Main Results:

Successful middle cranial fossa exploration was achieved in all four cadavers.
Adequate access to the trigeminal ganglion was demonstrated.
The procedure allowed for visualization relevant to potential dissection of the V2 and V3 trigeminal roots.

Conclusions:

Middle cranial fossa endoscopic exploration is a feasible approach for accessing the trigeminal ganglion.
This technique presents a potential minimally invasive surgical alternative for managing trigeminal neuralgia.
Further research may validate its use in treating medically refractory TN.