Macroscopic appearance of the ascending colon. These pictures show two sides of a specimen of the ascending colon dissected at autopsy (A: mucosal side; B: serous side). The macroscopic appearance of the specimen shows diffuse hemorrhage on both serous and mucosal sides, but a lack of any necrotic feature, consistent with a finding of intraluminal bleeding.
Takami et al. World Journal of Emergency Surgery 2011 6:15 doi:10.1186/1749-7922-6-15