title: Cystic olfactory schwannoma of the anterior cranial base.
abstract: Olfactory groove schwannomas are extremely uncommon and less than 30 cases are reported in the literature. We report a 21-year-old developmentally-retarded boy who experienced severe headache and aggressive behaviour for 5 months. Imaging showed a cystic mass in the subfrontal region, which was removed by craniotomy. The lesion had a vascular supply from the anterior ethmoidal arteries and it was noted to be attached to the right olfactory nerve. It was removed completely and histology showed it to be a schwannoma. Olfactory groove schwannomas are rare lesions and should be differentiated from meningiomas, neuroblastomas and dural-based metastatic lesions of the anterior cranial base.
authors.affiliation: Neurosurgery, Ankara Numune Education and Research Hospital, Clinics, Ankara, Turkey. eaglioglu@gmail.com
authors.forename: E
authors.initials: E
authors.lastname: Daglioglu
authors.forename: Onder
authors.initials: O
authors.lastname: Okay
authors.forename: Ali
authors.initials: A
authors.lastname: Dalgic
authors.forename: Ahmet Levent
authors.initials: AL
authors.lastname: Albayrak
authors.forename: Fikret
authors.initials: F
authors.lastname: Ergungor
mesh_terms: D000374:Aggression / Q000187:drug effects; D000927:Anticonvulsants / Q000627:therapeutic use; D003390:Cranial Nerve Neoplasms / Q000473:pathology* / Q000628:therapy; D003399:Craniotomy / Q000379:methods; D003560:Cysts / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009128:Muscle Spasticity / Q000473:pathology / Q000628:therapy; D009442:Neurilemmoma / Q000473:pathology* / Q000628:therapy; D020431:Olfactory Nerve Diseases / Q000473:pathology* / Q000628:therapy; D009833:Olfactory Pathways / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D000927:Anticonvulsants