#lymphoma  a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer
  supertype:  #cancer__malignant_neoplastic_disease  any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream
  subtype:  #Hodgkin's_disease  a malignant disorder in which there is progressive (but painless) enlargement of lymph tissue followed by enlargement of the spleen and liver

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