Six hours after colonoscopy with a large polypectomy, a patient has localized abdominal pain, fever, and leukocytosis, but CT shows no free air. What is the most likely diagnosis?
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A
Ischemic colitis from the bowel prep
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B
Delayed post-polypectomy hemorrhage
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C
Post-polypectomy coagulation syndrome
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D
Colonic perforation