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Multiple occurrences of primary gastric neoplasma are relatively well known,but few reports have been published regarding the simultaneous presence of gastric carcinoma and gastric malignant lymphoma.A previous study reported that the incidence of coexisting primary malignant lymphoma and adenocarcinoma of the stomach was 0.08％ (two of 2 438 adenocarcinoma cases).1 Moreover,most of the adenocarcinomas were smaller and penetrated less than coexisting mucosal-associated lymphoid tissue (MALT) lymphoma.Here,we report a case of synchronous adenocarcinoma and MALT lymphoma of the stomach,but the lesion with lymphoma was focal and smaller than that of adenocarcinoma in size.