1. Lymph nodes in the neck or supraclavicular region, or lymph nodes in the armpit that are gradually enlarged and do not feel painful (except for painful lymph nodes after drinking alcohol). 2. Pharyngeal lymphoma: difficulty in swallowing, nasal congestion, bleeding, swollen lymph nodes in the neck and under the jaw. 3. Chest lymphoma: cough, chest tightness, shortness of breath, etc. 4. Gastrointestinal lymphoma: abdominal pain, diarrhea, and feeling of lump in the abdomen. 5. Systemic symptoms: unexplained fever, night sweats, emaciation, itching. The current medical community usually classifies lymphoma into stages I-IV: Stage I – lesion is limited to 1 lymph node area (I) or one organ outside the lymphatic area is locally involved by the lesion (IE). Stage II – 2 or more lymph node areas (II), or the lesion is limited to organs other than lymph nodes and more than 1 lymph node area ipsilateral to the transverse septum (II), or the lesion is limited to organs other than lymph nodes and more than 1 lymph node area ipsilateral to the transverse septum (IIE). Stage III – Lymph node lesions appear in the upper and lower sentences of the transverse septum (III). It may be accompanied by splenic involvement (IIISE). Stage IV – Widespread or three-star invasion of 1 or more organs other than the lymph nodes, accompanied by preferential unaccompanied enlargement of the lymph nodes. Stage IV is when there is enlargement of lymph nodes in the liver or bone marrow, and whenever the liver or bone marrow is involved in the lesion.