MONDO_0021284 (carcinoma in situ of ureter) is a in situ carcinoma that involves the ureter. Also known as: carcinoma in situ of the ureter, stage 0 ureter carcinoma, stage 0is carcinoma of the ureter, stage 0is carcinoma of ureter, stage 0is ureter cancer, stage 0is ureter cancer aJCC v7, stage 0is ureter carcinoma, stage 0is ureter urothelial cancer.