Lymphoma is the general term used for cancers of the lymph system.
The lymph system is part of the immune system and a vital part of your body's defense against infection. To understand lymphoma, you need to know a little bit about how the lymph system works. The lymph system is made up of thin tubes that branch into all of your body s tissues. Located along this network are small, bean-shaped organs called lymph nodes. Clusters of these lymph nodes are found in the underarm, groin, neck, and abdomen.