Orbitosphenoid meningioma/Meningioma-en-plaque is a rare type of meningioma comprise 2-9% of all meningiomas, characterized by sheet likegrowth and bone hyperostosis. Total surgical resection is difficult and hence tumors have a high recurrence rates. We report here a case of orbitosphenoid meningiomaWHO classification Grade-IwithMicrocystic variant. The patient was a 65-year-old female presented to us with right eye severe proptosis, no perception of light, Relative Afferent Pupillary Defect and optic atrophy. Histology showed Meningioma, Imaging modalities revealed mass on either side of greater wing of sphenoid, which is extending intraorbitally on right side occupying the extraconal and intraconal compartments, another component of the lesion is seen extraaxially along right temporal convexity with a enhancing dural tail suggestive of right sphenoid wing meningioma. The tumour was removed by Right frontotemporal craniotomy, lateral orbitotomy and near total decompression of the mass. Operative findings showed advanced disease almost encroaching upon the cavernous sinus but not infiltrated.

Keywords: Proptosis; Orbitosphenoid meningioma; Craniotomy and orbitotomy