One hundred and fifty patients aged 19 to 79 years operated on for renal-cell carcinoma in 1978-1982 were examined. In 46% of the patients tumour was confined to the kidney, in 30%, it grew into the perirenal fat, and in 18.7%, into the renal veins, in 11.3%, there were metastasis to the regional lymph nodes and in 8%, remote metastasis. Morphologically, tumours were verified according to the classification by N. A. Kraevsky et al.: clear-cell carcinoma was diagnosed in 50.7%, granular-cell carcinoma in 12.7%, sarcoma-like carcinoma in 4.7%, adenocarcinoma in 13.3%, mixed-cell carcinoma with signs of different variants in 18.7% of patients. The morphological picture was compared to the angiographic and main clinical data; the frequency of tumour growth into the fibrous capsule of the kidney and vein and the incidence of metastasis were established for various morphological types of tumour. The incidence of these parameters is not similar at different morphological types, thus it is possible to distinguish different clinicomorphological variants of renal-cell carcinoma.