[Histochemical characteristics of renal cell cancer].

112 cases of renal cell carcinoma were studied histologically and histochemically. Variants of renal cell carcinoma were found to have certain histochemical peculiarities: accumulation of neutral fat and cholesterol esters in the clear-cell tumor variant and bound lipids and proteins in the tumors of granular cell, sarcoma-like and glandular variants. These characteristics become less distinct with decrease of differentiation degree of tumor cells. These features can be used for differential diagnosis of renal cell carcinoma.