A New Grading for Clear Cell Renal Cell Carcinoma: Combined WHO/ISUP Grading System

Abstract

Background: Several parameters have been proposed to predict prognosis in renal cell carcinomas. Although the tumor grade is an important prognostic data in the RCC, there is a low correlation between the observers. The aim of this study was to establish a new grading system based on the combination of different tumor grades in the tumor and the resulting data show the relationship with parameters that are prognostic significance.