Ureteral cancer is closely related to bladder cancer. The cells that line the ureters are the same type of cells that line the inside of the bladder. People diagnosed with ureteral cancer have a greatly increased risk of bladder cancer, so your doctor will recommend tests to look for signs of bladder cancer.
https://www.mayoclinic.org/diseases-conditions/ureteral-cancer/symptoms-causes/syc-20360721

