胃原发恶性淋巴瘤在胃部恶性肿瘤中居第２位，仅次于胃癌，其发病率为３％～５％。尽管本病发病率不高，但本病在处理方法、预后等方面与胃癌迥然不同，具有其独特的临床特殊性。也由于本病发病率不高，临床工作者对本病的认识、诊断水平远远不如胃癌高，常造成漏诊、误诊... The primary malignant lymphoma of the stomach ranks second in gastric malignancy, second only to gastric cancer, and its incidence rate is 3% to 5%. Although the incidence of this disease is not high, but the disease in the treatment methods, prognosis and other aspects of gastric cancer is very different, with its unique clinical characteristics. Because the incidence of this disease is not high, the clinician’s understanding of the disease, the diagnostic level is far lower than the high gastric cancer, often resulting in missed diagnosis, misdiagnosis...