Fig. 1

a The tumor presented in the lesser curvature of the gastric angle. b Histopathologic examination of the surgical specimen revealed the superficial extension of intermediate to poorly differentiated adenocarcinoma and partial invasion of the serous membrane. On immunohistochemical analysis, the tumor cells were noted to be positive for CK7 (c) and negative for CK20 (d) and showed a Ki-67 labeling index of < 3% (e)