Lymphoma is a type of cancer of the infection-fighting cells called lymphocytes, which are part of the immune system. These cells are seen in the lymph nodes, bone marrow, thymus, spleen and other parts of the body

One of the first symptoms of lymphoma is the appearance of swelling in the lymph nodes in the groin, belly or neck. Besides this, you will experience a sudden loss of weight, will always be tired and have fevers and drenching sweats at night. You will also be itching for no obvious cause.

Lymphoma occurs when the white blood cells (lymphocytes) change genetically, go out of control and stop adhering to the signals that control the birth and death of these cells.

People with immune system issues, with a family history of lymphoma, who have been taking immunosuppressive drugs and who have immunodeficiency disorders are likely to get this disease. Viruses, such as Epstein Barr Virus (EBV) and hepatitis C virus, and bacteria, such as Helicobacter pylori and Chlamydia pylori, can also cause lymphoma.

Lymphoma is diagnosed with the help of a variety of tests:
1. Bone marrow biopsy
2. Tissue biopsy
3. Computerised Tomography (CT) scan
4. Gallium scan
5. Positron emission tomography (PET) scan