What type of tumor is renal pelvis cancer?

Renal pelvis cancer belongs to urothelial cancer, urothelia exist in collecting duct, renal calyx, renal pelvis, ureter, bladder, that is, the latter 1/3 of prostate urethra belongs to urothelia, urothelia are also called transitional epithelium, renal pelvis cancer, ureter cancer most belong to transitional epithelial cancer, accounting for urothelia cancer The proportion is about 4%-6%, the incidence is relatively low, urothelia cancer more than 95% occur in the bladder. Tumors of the upper urinary tract account for only 4%-6% of the total proportion of ureters, so they belong to urothelial carcinoma.