Meningioma in mediastinum – a case report with review of the literature

A rare case of meningioma in mediastinum occurring at a 53-year-old Chinese man was reported. He was found a mass in the upper right mediastinum by chest X-ray examination without any symptom. The mass showed nodular and ovoid shape with complete capsule. Microscopically it was composed of sheets of larger plump cells and bundles of spindle cells arranged in fasciculars or whorl patterns. Immunohistochemically the neoplastic cells were positive for vimentin and EMA. This is an extremely rare tumor in this region of mediastinum and the differential diagnoses were discussed.