What is childhood Hodgkin lymphoma?
Hodgkin disease is a kind of lymphoma, an uncommon cancer that starts in the lymph system. The lymph system includes the lymph nodes, lymph vessels, and other parts of the body’s immune and blood-forming systems, such as the spleen and bone marrow. The lymph system makes, stores, and carries infection-fighting white blood cells called lymphocytes. Lymph nodes and lymph vessels are located throughout the body. Hodgkin lymphoma, also called Hodgkin disease, is one of the most curable cancers.