Lymphedema
Lymphedema Lymphedema is a common cause of leg and arm swelling due to the collection of too much lymph fluid caused by damage to the delicate vessels that hold the lymph fluid, called lymphatics. Lymph fluid accumulates in the tissues of the arm or leg and causes swelling when the lymphatics system is damaged. Common causes of lymphatic damage include: Surgery or radiation to treat cancer Infection Injury Post-surgery onset Obesity When the lymphedema is due to one of these causes, it is called secondary lymphedema.