Non-Hodgkin’s lymphoma is a cancer that starts in cells called lymphocytes, which are part of the body's immune system. Lymphocytes are located in the lymph nodes and other lymphoid tissues, such as the spleen and bone marrow. The lymphatic system drains excess fluid from the tissues. It also helps protect against infections.
Non-Hodgkin’s lymphoma is a general name. It applies to many types of lymphomas. There are several different types of non-Hodgkin’s lymphoma. They are based on the cell type that is involved and the patterns of growth. Treatment will vary according to type.
In general, these different types can be divided into two main groups:
- Indolent (or slow-growing) lymphomas
- Aggressive lymphomas
These cancers are not the same as Hodgkin's lymphoma.