Sq. cell tumor of urinary bladder is due to -a) Stoneb) Schistosomiasisc) Chr. cystitisd) Diabetes mellitus

Risk factors for squamous cell ca of bladder Schistosoma haematobium it's a risk factor for both TCC & sq. cell ca, but more for sq. cell ca. Chronic irritation from urinary calculi, long term indwelling catheters, chronic urinary infections Bladder diverticula