This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
A 62 year old patient presents with hematuria. On investigations he is
found to have renal calculi, calcifications in the wall of urinary bladder and
small contracted bladder. most likely cause is 
Select and explain. 
A. Bladder diverticulitis, B. Schistosomiasis, C. Prostate calculi, D. Ca. bladder
B: Schistosomiasis
Answer: B: Schistosomiasis 
Explanation: Schistosomiasis will cause calcification and increases risk for ca. Bladder
(SCC > TCC).