PROGNOSTIC SIGNIFICANCE OF COMPUTER-AIDED PLOIDOMETRY IN RENAL CELL CARCINOMA

Abstract

We have investigated the prognostic significance of DNA computer morphometry in the nuclei of tumor cells in renal cell carcinoma (RCC). Surgical specimens of 108 patients with renal cell carcinoma was the material for investigation. The mean age was 57,8 ± 0,9 years. Males were 49 (45.3%), women - 59 (54.6%). Correlation relationship was revealed between index of DNA accumulation (INDNK) in the nuclei of tumor cells with clinical stage (r = 0,64; p = 0,0001), the size of the tumor node (r = 0,44; p = 0,0001), the presence of regional and distant metastases (r = 0,68; p = 0,0001), Fuhrman tumor grading (r = 0,75; p = 0,001). No relationship of INDNK with sex (r = 0,10; p = 0,30), age (r = 0,08; p = 0,41) and patients with histological types of tumors (r = 0,09; p = 0, 32) was revealed. During Cox multivariate regression analysis, the following independent predictors of RCC were revealed: the presence of regional and distant metastases (p = 0,0008), the degree of Fuhrman nucleus atypia (p = 0,005); stage by TNM (p = 0,03) and ploidy (p = 0.03). Such clinical - anatomical factors such as gender, age, tumor size and histological types of tumor didn;t have prognostic significance in assessing the 5 - year survival rate of patients. Thus, the ploidy of tumor cells is a significant prognostic parameter along with the classical prognostic factors in RCC.