原发于淋巴结内的恶性淋巴瘤最多见。但是在淋巴结外淋巴网状组织或非淋巴网状组织的器官、组织也可原发恶性淋巴瘤即原发性结外淋巴瘤 (ＰＥＮＬ)。我们收集了 80例原发性结外淋巴瘤 ,就其临床表现、免疫表型、治疗、转归进行了总结。现报道如下。材料与方法上海市崇明县中心 The most common malignant lymphomas were primary lymph nodes. However, primary lymph node neoplasm (PENL), which is a primary malignant lymphoma, can also be found in the lymph nodes or non-lymphoid reticular tissues. We collected 80 primary extranodal lymphomas and summarized their clinical presentation, immunophenotype, treatment, and outcome. The report is as follows. Materials and Methods Shanghai Chongming County Center