Microsurgical excision of olfactory groove meningioma’s: a brief study of outcome of different surgical approaches.

Olfactory groove meningiomas (OGMs) account for 4.5 to 13% of all intracranial meningiomas1 . Olfactory groove meningiomas arise in the midline over the cribriform plate and frontosphenoidal suture1 . It is well known that most of these tumors occupy the floor of the anterior cranial fossa, extending all the way from the crista galli to the tuberculum sellae2.


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