Fig. 5

The microscopic findings of the gastric cancer (a-c) and the splenic tumor (d-e). a: The gastric cancer has infiltrated the submucosa (H-E; magnification, ×40). b: The moderately differentiated tubular adenocarcinoma and poorly differentiated adenocarcinoma (solid type) are confirmed in the gastric specimen (H-E, magnification, ×200). d and e: The histological examination reveals a moderately differentiated tubular adenocarcinoma and poorly differentiated adenocarcinoma (solid type) in the splenic tumor (d: H-E; magnification, ×40; e: H-E; magnification, ×200). c and f: The immunohistochemical expression of CEA is positive both in the primary gastric cancer and in the splenic tumor (CEA; magnification, ×200). CEA, carcinoembryonic antigen; H-E, hematoxylin-eosin stain