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Vicarious contrast excretion causing intraluminal colonic contrast on abdominal CT
  1. David Thurtle,
  2. William Petchey
  1. Department of Transplant Surgery, Cambridge University Hospitals NHS Trust, Cambridge, UK
  1. Correspondence to David Thurtle, Department of Transplant Surgery, Cambridge University Hospitals NHS Trust, Hills Road, Cambridge CB2 0QQ, UK; davidthurtle{at}gmail.com

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The patient underwent an intravenous contrast-enhanced abdominal CT scan due to suspected bleeding after renal transplant biopsy. He had minimal native renal function. Two days later, a repeat CT scan was performed on suspicion of further bleeding, resulting in these images. Our initial suspicion was that the patient had been inappropriately prepared with oral contrast agent for a previous scan …

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