Case contributed by Nikos Karapasias
Diagnosis certain


Flank pain and tenderness after extracorporeal shock wave lithotripsy (left ureteropelvic junction obstruction by renal calculi).

Patient Data

Age: 40 years
Gender: Female

Intravenous pyelogram


Delayed contrast excretion into the left urinary tract at 7 minutes, which persists 8 minutes post-contrast (note the left kidneys nephrogram is double-sized compare to the right). The late series (after 35 minutes) shows a collecting system dilatation and a contrast extravasating into area outside of the renal pelvis.

Case Discussion

Typical findings for urinoma (due calyceal rupture after extracorporeal shock wave lithotripsy).

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