Urinoma secondary to urinary obstruction with renal vein thrombosis
Known case of hepatitis B presented with urinary retention and left flank pain. No past history of trauma or previous surgery.
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The CT images demonstrate:
- distended urinary bladder with a thickened wall
- mild-to-moderate bilateral ureterohydronephrosis with no ureteric stone seen.
- prostatic hypertrophy (90 grs in this case).
- retroperitoneal fluid collection is noted in the left perirenal space corresponding to a urinoma confirmed on the excretory phase (contrast extravasation), indicating a rupture of the collecting system.
- left renal vein thrombosis was seen as a filling defect within the renal vein on the portal venous phase with a lack of parenchymal enhancement as compared to the right kidney.
- liver cirrhotic changes are seen as hypertrophy of the caudate lobe, atrophy of the segment IV with irregular borders. Dilated portal vein (16 mm) with no enlarged spleen.