Lymphoma is a malignant tumor originating from lymphatic tissue, including two major types: Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL). Lymphoma can invade any part of the body, with diverse clinical manifestations, usually characterized by swollen lymph nodes, fever, weight loss, night sweats, etc. Although the exact cause of lymphoma is unknown, it is generally believed to be related to infection, immunity, environmental factors and genetics. The number of new cases of lymphoma is increasing worldwide. Data show that there were 589,600 new cases of lymphoma worldwide in 2018.