Since the cytoplasmic expression pattern of MUC4/8G7 is seen also in pancreatic adenocarcinoma, intrahepatic cholangiocarcinoma, extra hepatic bile duct carcinoma, lung adenocarcinoma and oral squamous cell carcinoma [9], [10], [11], [12], [13], the intracytoplasmic MUC4/8G7 expression pattern in gastric cancer tissues may be reasonable. The gene discussed is MUC4; the disease is extrahepatic bile duct carcinoma.