Olfactory groove meningiomas: approaches and complications.
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.
Aguiar
Paulo Henrique Pires de
PH
Hospital São Camilo, Medical School, Av Pompéia 1178, São Paulo - SP, Brazil.
Tahara
Adriana
A
Almeida
Antonio Nogueira
AN
Simm
Renata
R
Silva
Arnaldo Neves da
AN
Maldaun
Marcos Vinicius Calfatt
MV
Panagopoulos
Alexandros Theodoros
AT
Zicarelli
Carlos Alexandre
CA
Silva
Pedro Gabriel
PG
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