Olfactory Groove Meningioma –A Case Report

Abstract

Introduction
Olfactory groove meningiomas are rare anterior cranial fossa meningiomas, constituting 8 – 13% of all intracranial meningiomas.1
Case Report
54/F with SNHL on left side, ipsilateral trigeminal nerve involvement and impaired cerebellar function tests.
she also had absent smell sensation for last 2-3 years but it was never her primary complaint.
MRI showed CP angle lesion on left side and surprisingly another lesion in the olfactory groove, suggestive of meningioma.
Excision of CP angle tumour was done and olfactory groove meningioma was kept on follow up. During follow up, progressive increase in size of the lesion was noted and hence endoscopic trans nasal excision of olfactory groove meningioma was done.
Postoperative period was uneventful.
Conclusion
Complete Surgical excision is the definitive treatment of skull base meningioma.
Endoscopic approach has less morbidity as opposed to the traditional open approaches but proper case selection is the key.
This case also highlights the importance of evaluating patient with anosmia which might be ignored by the patient.