Meningiomas del surco olfatorio: tratamiento quirúrgico / Olfactory groove meningiomas: surgical treatment

ABSTRACT

Objective. To present our experience in the management of olfactory goove meningiomas analyzing their clinical presentation, radiological features, surgical outcomes and postoperative complications. Methods. A retrospective study was conducted by analyzing the charts of the patients including surgical records, imaging studies and histopatological records. Results. A total of 304 meningiomas were operated on betwiin 1994-2007 in our department. There were 16 patients with olfactory groove meningiomas including 9 women and 7 men. A men age of 52.8 yr (age range 21-72yr). The most frequent symptom was a higher function impairment (5pt). Olfactory simptons were infrequent in our series. The average maximum tumoral diameter was 5.8 cm. The approaches used were the subfrontal, bifrontal craniotomy with orbital osteotomy, pterional and frontolateral. CSF fistula was the most frequent complication. Perioperative mortality was recorded in two cases. No relation with surgery was demonstrated. The mean follow-up period was 78 months. Conclusion. The olfactory groove meningiomas reaches a big size due to delay in diagnosis. The best treatment is the surgical excision with a surgical approach wich provides quick access to the tumor with the lesser morbimortality possible.