Abstract
Study aim: Endoscopic technique enables endonasal surgery of non-pituitary skull base lesions. Several cases of endonasal resection of the skull base meningiomas have been described.
Methods and material: At our institution, 614 endoscopic endonasal procedures were performed untill June 2012. Intraoperative MRI was performed in 409 cases.
We conducted an analysis of all endoscopic endonasal procedures for the skull base meningioma with a minimum follow-up of 6 months. Results: Between 2/2008 and 3/2012, 11 surgeries for skull base meningioma were performed.
Olfactory meningioma was treated endonasally in 3 cases, sellar or parasellar meningioma in 8 cases. The goal of the surgery in 7 cases was radical resection of meningioma.
Resection Simpson 1 was achieved in 6 cases (86%). Higher risk of postoperative cerebrospinal leakage represents a disadvantage of endoscopic technique.
It also needs to be considered that the patients who underwent this procedure have so far had a shorter follow-up. Absence of any brain retraction and potentially lower risk of postoperative vision deterioration represent advantages of the endonasal technique.