Lymphoma

Lymphoma is a cancer of the lymphatic system, which is part of the body's germ-fighting network. The lymphatic system includes the lymph nodes (lymph glands), spleen, thymus gland and bone marrow. Lymphoma can affect all those areas as well as other organs throughout the body. The cause of lymphoma is unknown. It is more common in people who: have a weakened immune system from conditions such as an inherited immune disorder, an autoimmune disease or HIV infection or AIDS. take medicines that suppress the immune system after having an organ transplant.

The symptoms of lymphoma are similar to those of some viral diseases, such as the common cold. However, they typically continue for a more extended period. Others may notice a swelling of the lymph nodes. There are lymph nodes all around the body. Swelling often occurs in the neck, groin, abdomen, or armpits.

Lymph nodes can also swell during common infections, such as a cold. In lymphoma, the swelling does not resolve. Pain is also more likely to accompany the swelling if it has occurred due to an infection.