title: Pterional and Unifrontal Approaches for the Microsurgical Resection of Olfactory Groove Meningiomas: Experience with 61 Consecutive Patients.
abstract: OBJECTIVE
  Olfactory 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.
  
  
  METHODS
  Our 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.
  
  
  RESULTS
  Sixty-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.
  
  
  CONCLUSIONS
  Pterional 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.
authors: Acibadem University, School of Medicine, Department of Neurosurgery, Istanbul, Turkey.
authors: Mustafa
authors: M
authors: Guduk
authors: Ulas
authors: U
authors: Yener
authors: Halil Ibrahim
authors: HI
authors: Sun
authors: Mehmet
authors: M
authors: Hacihanefioglu
authors: Koray
authors: K
authors: Ozduman
authors: M Necmettin
authors: MN
authors: Pamir
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003399:Craniotomy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000601:surgery*; D008579:Meningioma / Q000601:surgery*; D008866:Microsurgery / Q000379:methods*; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000379:methods*; D012086:Reoperation; D012189:Retrospective Studies; D019291:Skull Base / Q000601:surgery*; D016896:Treatment Outcome