Fig. 3

Histological findings of metastases. a Macroscopic findings in the stomach. There were two lesions in the stomach wall (arrow: lesser curvature (25 × 20 mm), arrowhead: anterior wall of antrum (15 × 13 mm). b Pathological examination showed well-differentiated tubular adenocarcinoma in the subserosa and muscularis propria of the stomach; the tumor was not exposed to the mucosa and serosa (arrow), and there was no involvement of lymph nodes. c Macroscopic finding in the gallbladder. A 13 × 5-mm submucosal tumor was found in the neck of the gallbladder (arrow). d Well-differentiated tubular adenocarcinoma located in the subserosa of the gallbladder (arrow)