Urinary Tract Stone After Ureterosigmoidostomy

Patients with urinary diversion have an increased risk of forming renal calculi. The incidence of renal stones after ureterosigmoidostomy (USS) increases with the length of follow up and varies in different series from 8 to l8%1. Renal calculi after urinary diversion are attributed to stasis and chronic infection, but the presence of metabolic complications may increase the risk of forming renal calculi.