Colonoscopic findings in a 78 year-old woman who presented with painless rectal bleeding. These four images reflect mucosal changes of ischemia (inadequate blood supply) in increasing severity, from patchy erythema (upper left) to frank ulceration (lower right).
Left: 77 year-old woman with rectal bleeding. Colonoscopy revealed broad ulcers with overlying exudate, and mucosal friability.
Right: 71 year-old woman with vomiting and bloody diarrhea. Colonoscopy revealed severe colitis with ulcers and diffuse mucosal oozing of blood.
Severe ischemic colitis in the ascending colon of a 60 year-old man with four months of increasing abdominal pain and weight loss. Findings included multiple focal abcesses (left) and areas of confluent ischemia bordering on necrosis (right).
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