长期以来,人们认为原发性胃淋巴瘤仅占所有胃恶性肿瘤的1～5％。因为很少有系列的报告及诊断的困难,所以原发性胃淋巴瘤的真正发病率是难于确定的。1974年Kline和Goldstein提出“胃淋巴瘤的发病率似乎在增高,当然其相应的增减与胃的癌肿有关,但也很可能是绝对的增多”。相继又有两个报道原发性胃淋巴瘤的发病率占所有胃肿瘤的8％和11％。1984年Sandler报道119例治疗5年以上的胃 For a long time, it was thought that primary gastric lymphoma accounted for only 1-5% of all gastric malignancies. Because there are few series of reports and difficulties in diagnosis, the true incidence of primary gastric lymphoma is difficult to determine. In 1974 Kline and Goldstein proposed that “the incidence of gastric lymphoma seems to be increasing. Of course, the corresponding increase or decrease is related to stomach cancer, but it is also likely to be an absolute increase.” Two consecutive reports of primary gastric lymphoma accounted for 8% and 11% of all gastric cancers. In 1984, Sandler reported 119 cases of stomach treated for more than 5 years