The lymphatic system transports fluid and immune cells throughout the body to maintain fluid balance and defend against disease. Hodgkin's disease is a type of lymphoma cancer originating from white blood cells that affects lymph tissue. Common symptoms include enlarged lymph nodes, fever, night sweats and weight loss. Treatment depends on disease stage and may involve chemotherapy, radiation therapy, or both. Lymphadenitis is an infection of the lymph nodes caused by bacteria, viruses or fungi that causes swelling. Treatment involves antibiotics, anti-inflammatory drugs and surgery if abscesses form. The immune system defends the body through immune cells and responses that attack pathogens and causes of disease. Kaposi's sarcoma is a cancer causing skin lesions and growths in