Hodgkin lymphoma is a cancer that begins in part of the immune system (the lymph system). White blood cells called lymphocytes can become abnormal or increase in number and grow without control. They may form lumps of tissue called tumors, usually in the lymph nodes of the neck, armpits or chest.
Like other cancers, Hodgkin lymphoma can spread (metastasize) to other parts of the body. To find out how severe your cancer is, your doctor will classify it by stage and grade.
Hodgkin is a very curable cancer compared to other cancers. But treatment success depends on your gender, the type of Hodgkin you have, its stage and your age when you are diagnosed.