Lymphedema is swelling of the leg all the way out onto the foot, including the toes. The veins may be normal; the problem is poor flow of clear lymph fluid through tiny channels called lymphatics. Lymphedema can affect one or both legs. It can develop in young women with no known cause and it can develop late in life as well. Sometimes the lymph channels get obstructed by tumor or infection, so a complete work-up is required. Treatment consists of lymphatic massage sometimes referred to as manual lymphatic drainage (MLD) and compression therapy.