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Sarcoma of the Kidney: Report of 6 Cases

Primary renal sarcomas are rare and constitute about 3% of all malignant renal neoplasms. They are malignant mesenchymal tumors of the kidney with a variety of histological types. In the past, these were variously classified as fibrosarcoma, leiomyosarcoma, angiosarcoma, liposarcoma, etc., but often they were also grouped under the common term sarcoma. As a result much confusion prevailed regarding the incidence of each of these entities. With recent advancements in histochemical techniques classification has been improved. We treated three cases of leiomyosarcoma and tree of fibrosarcoma.