淋巴瘤是一种淋巴结和含有淋巴结的器官原发的恶性肿瘤。一般还可以分为何杰金氏和非何杰金氏淋巴瘤,以后者多见。而原发性胃恶性淋巴瘤系指原发于胃壁淋巴滤泡的恶性肿瘤,不包括累及胃的全身性淋巴瘤。胃是原发性胃肠淋巴瘤常累及的器官,它是不常见的恶性肿瘤,仅占胃肠癌的1％,在所有胃恶性肿瘤中不到5％,占淋巴结外淋巴瘤的24％。 Lymphoma is a primary malignant tumor of lymph nodes and organs containing lymph nodes. Generally, it is also possible to distinguish why JKN and non-Hodgkin’s lymphoma are more common in the latter. Primary gastric malignant lymphomas are malignant tumors that originate in the lymphoid follicles of the stomach wall, and do not include systemic lymphomas involving the stomach. The stomach is an organ often involved in primary gastrointestinal lymphoma. It is an uncommon malignancy, accounting for only 1% of gastrointestinal cancers, less than 5% of all gastric malignancies, and 24% of lymphomas outside lymph nodes. .