Colon cancer arising from colonic diverticulum: A case report

Figure 3 Histopathological examination findings. A, B: Macroscopically, several diverticulum are visible in the colonic lumen, but tumorous lesions around the fistula are not observed; C: Histologically, there is tumor characterized by mild exophytic papillary growth (arrowheads) along the diverticular lumen (arrows). It was diagnosed as well-differentiated adenocarcinoma (HE staining, × 100).