<prompt> Most common malignant tumor of kidney:Papillary carcinomaPapillary adenomaRenal cell CAWilms tumor  <response>: Ans. c Renal cell CARef: Robbins 9th ed. 1952 Robbins 9th ed. States: by far the most common malignant tumor is renal cell carcinoma, followed by Wilms tumor, which is found in children. Incidence of RCC is: 85 M F 2:1 Most of the RCC are sporadio AD familialMust KnowKIDNEY CA extract from Robbins 9th ed MC benign tumor of kidney: Renal papillay adenoma MC malignant tumor of kidney: RCC Wilms tumor MC kidney tumor associated with tuberous sclerosis: Angiomyolipoma MC type of RCC: Clear cell CA 70 - 80 MC type of renal CA associated with dialysis: Papillary CA MC renal CA associated with sicke cell trait: Medullary CA Renal CA having best prognosis: Chromophobe I 