Metastasis of renal sarcoma.

Data from 27 autopsy cases of renal sarcoma were investigated concerning the mode of metastases. The incidence was 1% in 2,651 cases of new growths of the kidney. Histologically nine were leiomyosarcoma, and five each were rhabdomyosarcoma and fibrosarcoma. The lungs, lymph nodes and liver were the most frequent sites of metastases. No significant differences in metastatic sites were noted among the histological types. Two cases or 7% had no metastasis and this percentage is comparable to that for other new growths of the kidney.