[Pyelonephritis in patients with congenital malformations of the urinary tract after corrective operation and under antibiotic therapy (author's transl)].

398 (otherwise unselected) children with certain types of congenital urinary tract malformation were followed up for a period of not less than three years for evaluation of the infection rate after surgical correction (the latter performed in 1968 to 1972). During a six month course post op., all patients received appropriate antibacterial drugs, thereafter cessation of medical treatment depending upon normal findings in urinalysis. The over-all cure rate was 77% after six months, 85% after twelve months, 95% after two years and 97% after three years. No recurrence of urinary tract infection was observed three years after surgery of in frapelvic ureteral stenosis/hydronephrosis (n=86; Anderson-Hynes procedure) in 100%; of distal ureteral stenosis/megaureter (n=76; Politano-Leadbetter or occasionally Boari approach) in 92%; and of primary reflux (n=236; Lich-Grégoir technique) in 98%. The incidence of infectious relapse following any normal cytological and bacteriological control was 1% resp. 7% resp. 2%, with an average of 3% for all three groups.