title: An unusual case of clear cell meningioma.
abstract: Clear-cell meningioma (CCM) is an uncommon, aggressive variant of meningioma, usually affecting younger females and having predilection for infratentorial locations. We present a rare case of recurrent supratentorial CCM in a 58-year-old male. Ten years back, he had an intra-axial tumor in the left occipital lobe, which was managed by surgical excision and radiotherapy. Currently, the patient presented with sudden severe headache along with speech and vision disturbances. Neuroimaging revealed an extra-axial parietooccipital tumor, with intratumoural bleed. Histopathology of both tumors showed features of CCM, immunopositive for epithelial membrane antigen (EMA) and vimentin. This case illustrates multiple unusual features of a rare variant of meningioma in the form of affection of an adult age group, supratentorial location, recurrence, and intratumoral bleed. It also highlights the importance of incorporating immunohistochemistry in the diagnostic workup, to exclude CCM mimics, each having distinctive biological behavior, and prognostic outcome, and warranting different therapeutic protocols.
authors.affiliation: Department of Pathology, Armed Forces Medical College, Pune, India.
authors.forename: Prabal
authors.initials: P
authors.lastname: Deb
authors.forename: Subramanya G S
authors.initials: SG
authors.lastname: Datta
mesh_terms: D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D009778:Occipital Lobe / Q000473:pathology; D010336:Pathology; D015173:Supratentorial Neoplasms / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed