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P.147 Endoscopic transorbital approach to the skull base: a single centre 8 year experience

Published online by Cambridge University Press:  10 July 2025

W Owiti
Affiliation:
(Hamilton)*
K Reddy
Affiliation:
(Hamilton)
D Sommers
Affiliation:
(Hamilton)
E Yasuda
Affiliation:
(Hamilton)
A Almunder
Affiliation:
(Hamilton)
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Abstract

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Background: Minimally invasive endoscopic techniques via the transorbital approach (ETOA) is emerging as an alternative approach for addressing skull base tumours. This study aims to showcase our institution’s 8 year experience in using ETOA, detailing the surgical technique employed and presenting comprehensive patient outcomes. Methods: A retrospective analysis was conducted on data from 32 patients who underwent ETOA within the past eight years. Demographic data was obtained as well as information on surgical approaches, intra-operative findings, recurrence and complications. Results: 33 ETOA procedures were performed on 29 patients, with an average age of 45, 14 of whom were women. The superior orbital corridor was utilized in 100% of cases, and in 79.17%, ETOA was complemented by a transnasal approach. Spheno-orbital meningioma accounted for the most common surgical indication (36.36%, n=12, followed by lateral frontal sinus mucocele (18.75%, n=6). The median length of stay was one day.Transient V1 numbness was the primary complication (33%, n=8), and 18.75% (n=6) necessitated another surgery. Notably, no mortality was associated with this procedure. Conclusions: Our institution’s experience underscores the notable safety and effectiveness of ETOA, The main complications being transient V1 numbness, proptosis, transient diplopia. Revision surgery was only required in 6 out of 33 cases.

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Abstracts
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Canadian Neurological Sciences Federation