Urinoma due to urinary obstruction in a horseshoe kidney

Case contributed by Dr Ammar Haouimi


Left renal colic. No past history of trauma or previous surgery.

Patient Data

Age: 50 years
Gender: Male

The CT images demonstrate a horseshoe kidney with a moderate left nephrohydroureter due to small stone (5 mm) impacted at the vesicoureteric junction. A retroperitoneal fluid collection is noted in the perirenal space and along the left psoas muscle corresponding to a urinoma as confirmed on the excretory phase. The contrast extravasation from the urinary tract (renal pelvis) is well visualized on the excretory phase. Note a small simple renal cyst.

Case Discussion

CT urography of a urinoma due to urinary obstruction (stone at the vesicoureteric junction) in a horseshoe kidney.


Additional Contributor: C. Boukaaba, MD

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Case information

rID: 74533
Published: 4th Mar 2020
Last edited: 5th Mar 2020
System: Urogenital
Inclusion in quiz mode: Included
Institution: Aurès Medical Imaging Center - Batna Algeria

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