Lung tumors of uncertain histogenesis.


Unusual lung tumors of uncertain origin have been described briefly concerning benign clear cell (sugar) tumor and, in more detail, concerning pneumocytoma (so-called sclerosing hemangioma). Melanocytic differentiation of clear cell tumor, which is peculiar to the lung, has been suggested recently. Sclerosing hemangioma, also unique to the lung, is now… (More)