article_snippet: Hodgkin's Lymphoma (cells pictured) is a disease of the white blood cells .
article_snippet: Hodgkin's Lymphoma is cancer of the white blood cells called B lymphocytes that circulate around the lymphatic system, which is a network of vessels and glands spread throughout the body.
article_snippet: The lymphatic system is part of your immune system.
article_snippet: Clear fluid called lymph flows through the lymphatic vessels and contains infection-fighting white blood cells known as lymphocytes.
article_snippet: Hodgkin's Lymphoma causes the lymphocytes to multiply in an abnormal way and collect in certain parts of The lymphatic system, such as the lymph nodes or glands.
article_snippet: the lymphocytes lose the lymphocytes infection-fighting properties, making you more vulnerable to infection.
article_snippet: The most common symptom of HL is a painless swelling in a lymph node, usually in the neck, armpit or groin.