[Prognostic value of the histological grading of cancer of the kidney].

The data of morphologic examination of 83 cases of renal carcinoma were used for grading tumor malignancy (grades I--III). The classification is based on such quantitative parameters as nucleus-cytoplasm and nucleolus-nucleus ratios, percentage of nucleolus-containing nuclei, and size and DNA content of the nucleus. The grading system proved to be of prognostic value and easy to reproduce.