<prompt> Most common tumor of urinary bladder is ?Sq. cell carcinomaAdeno carcinomaTransitional carcinomaStr. squamous carcinoma  <response>: Answer is c i.e. Transitional cell carcinoma There are 3 common histological types of bladder cancer a Transitional urothelial cell ca -- 90 b Squamous cell ca -- 5-10 c Adenocarcinoma -- 2 