What Is Hodgkin's Disease?

Hodgkin's disease is a type of lymphoma. Lymphomas are cancers that develop in the lymphatic system, a part of the body's immune system. The job of the lymphatic system is to help fight diseases and infection.
The lymphatic system includes a network of thin tubes that branch, like blood vessels, into the tissues throughout the body. Lymphatic vessels carry lymph, a colorless, watery fluid that contains infection-fighting cells called lymphocytes. Along this network of vessels are groups of small, bean-shaped organs called lymph nodes that filter the lymph as it passes through the nodes. Clusters of lymph nodes are found in the underarm, groin, neck, and abdomen. Other parts of the lymphatic system are the spleen, thymus, tonsils, and bone marrow.
Like all types of cancer, Hodgkin's disease affects the body's cells. Healthy cells grow, divide, and replace themselves in an orderly manner.…