Swelling, most often in an arm or a leg, caused by a lymphatic system blockage.

Lymphedema is swelling that typically occurs in an arm or a leg, but also can happen in the chest wall, belly, neck and genitals. The condition is caused by a blockage in the lymphatic system, part of the immune and circulatory systems. Lymphedema is most commonly caused by lymph node removal or damage due to cancer treatment.

Lymphedema symptoms typically include swelling of part or all of an arm or a leg, including fingers and toes. A feeling of heaviness or tightness and a loss of range of motion in the arm or leg also are common symptoms.

Treatment focuses on reducing the swelling and preventing complications. Exercise, wrapping, massage and compression can help. Surgery is an option in more-serious cases.

Swelling, most often in an arm or leg, caused by a lymphatic system blockage.