Types of non-Hodgkin lymphoma

B-cell lymphocyte white blood cells are affected. B-cells are made in your bone marrow and make antibodies to fight infection. 

T-cell lymphocytes are affected. T-cells are made in your thymus gland behind your breastbone and help your immune system fight infection and disease in other ways. T-cell lymphomas are rare.

Natural killer (NK) cells are affected. NK cells are mainly made in the bone marrow, but they mature in lymph nodes and other parts of the body. They release chemicals that can kill harmful cells in their early stage of develop ment, such as viruses and cancer cells. This prevents these cells from spreading. NK-cell lymphomas are rare.

Low-grade non-Hodgkin lymphoma (NHL) refers to a range of different slow-growing lymphomas. They may need little or no treatment for months or even years. The speed of their growth might change over time and there may be times when the disease is more active. After treatment, low-grade lymphomas usually get smaller or even disappear altogether. Some types of low-grade lymphoma can be completely controlled with treatment. If they do return, they can be treated again.

High-grade non-Hodgkin lymphoma (NHL) refers to a range of different fast-growing lymphomas. They usually cause symptoms and will need treatment straight away. It is possible to cure most of them (complete remission).