title: Olfactory groove meningiomas: approaches and complications.
abstract: Olfactory groove meningiomas (OGM) account for 4.5% of all intracranial meningiomas. We report 21 patients with OGMs. Tumors were operated on using three surgical approaches: bifrontal (7 patients), fronto-pterional (11 patients) and fronto-orbital (3 patients). Total tumor removal (Simpson Grade 1) was achieved in 13 patients and Simpson II in 8 patients. Perioperative mortality was 4.76%. The average size of the OGM was 4.3+/-1.1cm. The overall recurrence rate was 19%. We preferred to use the pterional approach, which provides quick access to the tumor with less brain exposure. It also allows complete drainage of cisternal cerebrospinal fluid, providing a good level of brain relaxation during surgery. However, for long, thin tumors, hemostasis can be difficult using this approach.
authors: Hospital São Camilo, Medical School, Av Pompéia 1178, São Paulo - SP, Brazil.
authors: Paulo Henrique Pires de
authors: PH
authors: Aguiar
authors: Adriana
authors: A
authors: Tahara
authors: Antonio Nogueira
authors: AN
authors: Almeida
authors: Renata
authors: R
authors: Simm
authors: Arnaldo Neves da
authors: AN
authors: Silva
authors: Marcos Vinicius Calfatt
authors: MV
authors: Maldaun
authors: Alexandros Theodoros
authors: AT
authors: Panagopoulos
authors: Carlos Alexandre
authors: CA
authors: Zicarelli
authors: Pedro Gabriel
authors: PG
authors: Silva
mesh_terms: D000328:Adult; D000368:Aged; D002555:Cerebrospinal Fluid / Q000502:physiology; D005260:Female; D006801:Humans; D017567:Karnofsky Performance Status; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000150:complications / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D019635:Neurosurgical Procedures / Q000401:mortality; D009833:Olfactory Pathways / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult