Primary Extra Cranial Meningioma in Parotid Gland: Review of a Rare Case - Abstract
Extra cranial Meningioma is a rare tumour that occurs in skin and soft tissue around scalp or along the vertebral axis. By definition they are not associated with an underlying Meningioma of the neuraxis and extra cranial extension of an intracranial tumour should always be excluded. Adult presentation of extra cranial Meningioma usually occurs in the vicinity of sensory organs (eye, ear, and nose) or along the path
of cranial and spinal nerves. 35 years, Male patient presented with unilateral swelling in right parotid region gradually increasing in size for last one year, without any other clinical symptom, clinically diagnosed as Mixed Parotid tumour. FNAC done from the swelling yielded particulate material, stained by routine MGG and PAP stain on dried and wet-fixed smears respectively, which on microscopy had shown high cellular yield of spindle to oval cells, epithelial looking (meningothelial cells), in syncytial clusters with
whirling pattern, having central psammomatous calcification. Individual cells show blunt chromatin pattern, regular nuclear contour and presence of intra-nuclear cytoplasmic inclusions. On the basis of cytological findings, diagnosis of Meningioma was given and subsequently computerized Tomography did reveal neither any intracranial lesion, nor any intra-cranial /par pharyngeal extension. Final diagnosis of extra-cranial Meningioma was confirmed by histopathological examination of the swelling. An FNAC
finding of Meningioma almost mimics its histopathological pattern and is therefore very much sensitive tool to diagnose the cases of extra cranial Meningioma.