initial biopsy of the left renal pelvicalyceal system lesion was positive for high-grade papillary urothelial cell carcinoma (UCC). It showed focal invasion of the lamina propria and adjacent renal pyramids on the radical nephroureterectomy specimen (pT1,pNx,pMx)
exophytic left renal lesion turned out to be a papillary renal cell carcinoma (pRCC), pT1a,pNx,pMx