[Sonographic evaluation of drainage relations following antireflux operations in childhood].

The judgment of the passage conditions after operations on the ureter and the kidney is of great importance. The sonography as "diagnostics of choice" allows an exact, non-invasive continuous control of the passage of urine in the early postoperative phase and in the kidney dispensary. On a larger number of patients is examined, which value this method obtains in the postoperative diagnostics. With the help of a subdivision of the disturbances of the transport of urine according to sonographic criteria an exact judgment is possible and restricts the use of radiological methods to cases with pathological sonographic findings.