The role of schistosomiasis in urolithiasis.

Both urinary schistosomiasis and urolithiasis are common in Saudi Arabia and other countries and an aetiological relationship between them has been suggested. One hundred and fifty Saudi Arabian patients suffering from urinary schistosomiasis were compared with a similar number of patients suffering from urolithiasis and with a control group. The evidence suggests that in Saudi Arabia, schistosomiasis plays a very limited role in urinary tract stone formation.