Urothelial carcinoma in situ (CIS)
Urothelial carcinoma in situ (CIS) is a type of non-invasive cancer. It can occur anywhere along the urinary tract which includes the bladder, ureters, urethra, and kidneys. If left untreated, urothelial CIS can change over time into a type of invasive cancer called urothelial carcinoma. Urothelial CIS arises from specialized urothelial cells that cover the inside …
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