• Mustafa Guduk, Ulas Yener, Halil Ibrahim Sun, Mehmet Hacihanefioglu, Koray Ozduman, and M Necmettin Pamir.
• Acibadem University, School of Medicine, Department of Neurosurgery, Istanbul, Turkey.
• Turk Neurosurg. 2017 Jan 1; 27 (5): 707-715.

AimOlfactory groove meningiomas make up 4 to 13% of meningiomas. The first line treatment of meningiomas is surgery, but the extent and types of approaches advised for olfactory groove meningiomas are diverse, from aggressive skull base approaches to standard or minimally invasive craniotomies and endoscopic approaches. We retrospectively reviewed our series of olfactory groove meningiomas that were operated microsurgically by standard pterional or unifrontal approaches.Material And MethodsOur series of 61 olfactory groove meningioma patients operated through pterional or unifrontal approaches between March 1987 and September 2015 was reviewed and the clinical data, radiological findings, surgical treatment and clinical outcomes of the patients were retrospectively analyzed.ResultsSixty-three craniotomies were performed in total. Pterional and unifrontal approaches were used in 38 (60.3%) and 25 (39.7%) surgical procedures, respectively. Overall, gross total tumor resection was achieved in 59 (93.7%) cases. Complications were seen in 8 cases, and 2 of these patients underwent reoperation. Three of the 4 patients where only subtotal resection could be achieved underwent gamma knife radiosurgery.ConclusionPterional and unifrontal approaches, which are familiar and standard for neurosurgeons, can accomplish high rates of total resection with acceptable complication and recurrence rates for the treatment of olfactory groove meningiomas.

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