a)Introduction of problem: The significant prognostic factors of Wilms' tumor are- stage, age, anaplasia, size, capsular invasion, etc. The role of DNA ploidy, proliferation markers is still not proven. b)Abstract: Aims: This study was done to analyze the histopathological spectrum of pediatric renal tumors and to study the expression of Ki67, p53 and p27 in WT and correlate their expression in epithelial and blastema components in different stages of WT. Results: It was observed that the PI of Ki67 of epithelial component was significantly higher than that of blastema component in all...