Comparison of 1998 WHO/ISUP and 1973 WHO Classifications for Interobserver Variability in Grading of Papillary Urothelial Neoplasms of the Bladder

Abstract

The diagnosis of papillary urothelial neoplasia with low malignant potential and the criteria that differentiates it from low-grade carcinomas needs improvement in order to compare the different studies and therapies and to provide more accurate information for management.