Primary Pulmonary Meningioma

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Abstract
Ten cases of benign primary pulmonary meningioma have been reported in the English literature. We describe herein an additional case of a benign meningioma arising in the lung showing comparable histologic features of sheets and whorls of epithelioid and meningothelial cells with numerous psammoma bodies. Immunohistochemistry showed that the tumor expressed vimentin and epithelial membrane antigen and was negative for keratin, CD34, glial fibrillary acidic protein, CAM 5.2 and S-100, in keeping with previously reported findings. Our review of the literature reveals similar clinical presentations and follow-up behavior and, where reported, similar electron microscopic and immunostaining features.

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