<prompt> Transitional cell carcinoma bladder caused by-SchistosomiasisAscariasisMalariaNone  <response>: Ans. is a i.e., Schistosomiasis Risk factors for transitional ceil carcinoma TCC of bladder -Smoking - Major etiological factor.Occupational exposure to chemicals - Nephthylamine benzidine, aniline dyes, acrolein.Schistosoma haematobium Bilharziasis - It is a risk factor for both TCC SCC.Drugs - PhenacetinCyclophosphamide therapyPelvic irradiations 