Lymphoma
Lymphoma is a malignant tumor that originates in a lymph node or lymph tissue. Clinical manifestations are painless and progressive lymphadenopathy. The disease can occur at any age, but the peak age of onset is 31 to 40 years old, and the peak of non-Hodgkin's lymphoma moves forward slightly. The male to female ratio is: 2 ~ 3: 1.
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