Case 41
Clinical Presentation
A 78-year-old man underwent descending colectomy for colonic infarction. Postoperatively, he developed fever and a fluctuant mass in the left lower quadrant.
Imaging Findings
(A) Contrast-enhanced computed tomography (CT) image of pelvis shows a fluid collection in the left lower quadrant (asterisk). (B) Delayed CT image at a lower level shows excreted contrast (arrow) within the collection (asterisk). An incidental note is made of wall calcification (arrowhead) in the left common iliac artery.
Differential Diagnosis
• Urinoma due to ureteric injury at the time of surgery:A fluid collection adjacent to the urinary tract is typical. Its opacification with contrast excreted by the urinary tract is confirmatory.
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