A REVIEW of the literature on meningioma and meningosarcoma reveals only 1 reported case of metastasis to the lungs. This was the case of Dorothy Russell, reported by Cushing and Eisenhardt1(1938), in which pulmonary metastases were observed at necropsy. The purpose of the present paper is to report a second case of meningosarcoma with pulmonary metastasis. HISTORICAL REVIEW Since the time of Antoine Louis2(1774), who wrote on fungating tumors of the dura mater, differences of opinion have been expressed by pathologists, chiefly with respect to the theories of origin, pathogenesis and terminology of meningeal tumors. The embryologists have contributed to the general disagreement by their changing concepts of the derivation of the cells forming the coverings of the central nervous system. During the nineteenth century Cruveilhier3(1829-1835) and Lebert4(1845), in France; Paget5(1854), in England, and Meyer6(1860) and Virchow7