DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Hodgkin's disease causing swelling in the lower legs of a 68-year-old man. The cause of the swelling is a lymphadenopathy (lymph gland malfuntion) in the patient's groin due to Hodgkin's disease. This is a cancer of the lymphatic system, the system that drains and circulates lymph fluid from the body's tissues. Cancerous growths can obstruct the fluid flow, leading to the swelling seen here.
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