[Diagnosis of obstruction and stone passage following ESWL therapy (extracorporeal shock-wave lithotripsy)]

78 patients with ureteral formations of stone fragments after ESWL therapy have been controlled by both ultrasound and plain abdominal films. Detection of renal stone fragments was possible similarly by sonography or radiographs. The plain films demonstrated well location and length of the "Steinstrasse", which did not necessarily cause obstruction. Combination of sonography and plain abdominal film allows an easy follow-up after ESWL therapy, so i.v. urogramm is not aquired routinely.