Eyebrow supraorbital keyhole craniotomy for olfactory groove meningiomas with endoscope assistance: case series and syst
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ORIGINAL ARTICLE - BRAIN TUMORS
Eyebrow supraorbital keyhole craniotomy for olfactory groove meningiomas with endoscope assistance: case series and systematic review of extent of resection, quantification of postoperative frontal lobe injury, anosmia, and recurrence Brett E. Youngerman 1,2 & Lior Shtayer 1 & Mina M. Gerges 1,3 & Alexandra G. Larsen 1 & Hilarie C. Tomasiewicz 1 & Theodore H. Schwartz 1 Received: 21 June 2020 / Accepted: 24 August 2020 # Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract Background Olfactory groove meningiomas (OGMs) are commonly treated with open craniotomy. Endonasal approaches have also been described. Objective To present clinical and radiographic outcomes for the minimally invasive eyebrow incision supraorbital keyhole approach with endoscopic assistance for OGMs. Methods We performed a retrospective single-center cohort study and a systematic literature review. Results Fifteen patients were identified, all with Grade I meningiomas. Radiographic gross total resection of enhancing tumor was achieved in all patients. Mean frontal lobe fluid-attenuated inversion recovery volume decreased from 11.1 ± 18.3 cm3 preoperatively to 9.9 ± 11.4 cm3 immediately postoperatively, and there was minimal new restricted diffusion (3.2 ± 2.2 cm3; max 7.5 cm3). Median length of stay was 3 days (range 2–8). Vision was improved in 4 (80%) and stable in 1 (20%) of 5 patients with a preoperative deficit. New postoperative anosmia occurred in 3 (23%) of 13 patients with any preoperative olfaction. All patients were satisfied with their cosmetic result at 3 months. After a median follow-up of 32.2 months, there were 2 (13.3%) asymptomatic radiographic recurrences, 1 treated with radiosurgery and the other with endoscopic endonasal approach (EEA). No patients required further craniotomy. Systematic review revealed the present series to be the largest to date reporting disaggregated outcomes for the eyebrow approach to OGM. Conclusion The eyebrow incision supraorbital keyhole craniotomy with endoscopic assistance is a safe and effective approach to OGM with tumor control rates similar to more invasive open approaches and better than the endonasal approach. Rates of frontal lobe injury, CSF leak and anosmia are comparatively low. Keywords Olfactory groove meningioma . Eyebrow incision . Keyhole craniotomy . Supraorbital approach . Minimally invasive . Olfaction
Previous Presentations This work has not previously been published or presented in whole or in part. This article is part of the Topical Collection on Brain Tumors Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00701-020-04552-x) contains supplementary material, which is available to authorized users. * Theodore H. Schwartz [email protected] 1
Department of Neurosurgery, Weill Cornell Medicine, New York-Presbyterian Hospital, 525 East 68th St., Box #99, New York, NY 10065, USA
2
Department of Neurosurgery, Columbia University Medical Center, New York-Presbyterian Hospital, N
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