Management of acute hydronephrosis in pregnancy by ureteral stenting.

Acute hydronephrosis during pregnancy that fails to respond to conservative treatment can be managed by ureteral stenting or in special cases by application of a percutaneous nephrostomy tube. We report the outcome in 116 pregnant women with symptomatic hydronephrosis. In 30 cases ureteric stents were passed under local anesthesia. In 2 cases (pyeloureteral stenosis, impacted ureteric stone) percutaneous nephrostomy was necessary. Overall each course of pregnancy and disease was individually decided. In case of persisting symptoms due to acute hydronephrosis, ureteral stenting was preferred, since it is a simple, safe and effective method of internal upper urinary tract drainage.