label: Non-Invasive Papillary Urothelial Carcinoma, Low Grade
label_lc: non-invasive papillary urothelial carcinoma, low grade
description: "A non-invasive papillary urothelial carcinoma characterized by minimal cytologic atypia and infrequent mitotic figures (usually limited to the lower half of the tumor). It usually occurs in the urinary bladder, but it can arise from other sites in the urinary tract. This type of carcinoma recurs frequently, may invade the urinary tract wall, and has a low risk of progression."