Hematochezia due to rectal invasion by an internal iliac artery aneurysm: A case report

Figure 2 Pathological diagnosis (magnification 10 × 10). A: Pathological examination of the aneurysm wall revealed hemorrhage and fibrous exudation; B: Rectal pathologic examination showed ulceration with perforation, mucosal edema, submucosal and serosal purulent inflammation with bleeding and necrosis, consistent with changes related to intestinal perforation. Ulceration was noted at one end of the rectum, while the other end was free of disease. Additionally, reactive hyperplasia of perienteric lymph nodes (17 in total) was observed.