Occasionally, the lymphocytes mutate, causing lymphoma, a blood cancer. The early symptoms of lymphoma are enlarged lymph nodes, weight loss, fatigue, and fever. Lymphoma can present as dozens of subtypes, though most hospitals classify them into Hodgkin’s lymphomas and non-Hodgkin lymphomas. Lymphoma is most likely to spread to the lungs, brain, and liver. Some subtypes are curable through radiation treatment. and chemotherapy. Treatments can help prolong survival in most other cases.

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