Fig. 1

Pathology of the primary cecal carcinoma. a Gross appearance of the ulcerous tumor in the cecum (yellow arrowheads). Note that a normal appendix is apparent. b Hematoxylin-and-eosin-stained section of the primary cecal cancer specimen demonstrates that the adenocarcinoma has slightly invaded the muscle layer to reach the subserosa (red arrows) (original magnification ×100)