The immune system consists of a complex and well-distributed network of both blood and lymphatic tissue. A lymphoma is a cancerous condition of the lymphoid tissue, that is, lymph nodes, thymus, spleen, and lymphoid tissue of the gastrointestinal tract.
Lymphoid cells play an active part in the body's immune system.
Lymphoma results in uncontrolled production of lymphocytes. The result is the interference in the body's functional immunity that normally provides for effective resistance to infectious agents and neoplastic cells. Lymphomas include a number of diseases that have different manifestations, treatments and prognoses, depending on the lymphocyte type and stage of differentiation. Incidence Lymphomas are the seventh most common cause of death from cancer. They are subdivided into two groups, Hodgkin's disease and non-Hodgkin's lymphomas.