Non-Hodgkin's lymphoma in the elderly

Non-Hodgkin's disease (N-Hodgkinrsquo; s lymphoma) is a group of heterogeneous malignant tumors characterized by the clonal proliferation of malignant B lymphocytes or T lymphocytes. It usually originates in the lymph nodes and can also originate in any organ of the body. Non-Hodgkin's disease was previously called reticulosarcoma or lymphosarcoma.