[Multiple benign fibrous histiocytoma of the lung (authors' translation)].

Multiple benign fibrous histiocytomas in both lungs of a 45-year-old woman are described. The tumors were found incidentally on routine roentgenograms. The lesions were resected, with no recurrence after two years. The tumors were predominantly fibroblastic and included histiocytes, xanthomatous cells, lymphocytes, plasma cells, and giant cells. Cells and fibers had a characteristic storiform pattern. Because of their absolutely benign biological behavior, resection of benign fibrous histiocytomas should be minimal. This appears to be the first case of multiple benign fibrous histiocytomas in both lungs.