[The iatrogenic fornix rupture after endoscopic extraction of an ureteral stone via ureterorenoscopy].

Iatrogenic fornix rupture caused during retrograde manipulation of the ureter is a rather rare or rarely diagnosed phenomenon. A 22 year-old female patient presented with fornix rupture following endoscopic ureteral stone extraction under ureterorenoscopy, the rupture having become symptomatic 2 days later. Diagnostics were done by means of sonography and radiography and confirmed by CT-scan performed to rule out abscess formation which may have occurred in this case of delayed symptoms. Conservative antibiotic therapy was sufficient in this case. Ca. 10 % of all perirenal abscesses are attributed to urinary extravasation due to fornix ruptures, requiring surgical intervention. Regular sonographic control is therefore strongly recommended when fornix rupture is suspected to ensure appropriate counter measures.