What is lymphedema?

lymphedema and breast cancer

The lymphatic system transports lymph (limf), a protein-rich clear fluid containing white blood cells, throughout the body. A key part of the body’s immune system, lymph fluid moves through lymph vessels and hundreds of lymph nodes.

Lymphedema — swelling or edema — happens when the lymphatic system isn’t working properly. It is sometimes a side effect of breast cancer treatment and is considered secondary lymphedema.

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