What is Lymphedema?
Lymphedema refers to swelling in an extremity due to the failure to drain away the volume of lymph being formed in the extremity and can affect the legs or the arms.
What are lymphatics and lymph nodes?
Lymphatics collect tissue fluid throughout the body including the extremities and return it to the large veins near the heart. The lymph represents fluid that originates as the circulation passes through the tissues. The lymph passes through filtering sites called lymph nodes along the way back to the heart.