|Division of Gastrointestinal and Liver Pathology|
|Clinical History:||Images 1 and 2 are biopsies of the splenic flexure of a 74-year-old white male with ischaemic cardiomyopathy, and an ejection fraction of 15%. His hospital course was complicated by acute renal failure and heme- positive stools. Colonoscopy revealed mucosal erythema, friability and patchy ulceration at the splenic flexure.
Images 3 and 4 are colonic biopsies of a 60-year-old male status post renal transplant, who presented with gastrointestinal bleeding, uremic symptoms and was started on hemodialysis.
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