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Lymphedema is a build-up of lymph fluid in the fatty tissues just under your skin that causes swelling (edema). Cancer and its surgery or other treatments may cause lymphedema.  It's important to understand why lymphedema can happen and when to get help and support.

What Is Lymphedema?

Some cancer treatments cause a certain type of swelling in a part of the body, called lymphedema. Find out more about lymphedema, learn what to look for, and when it most commonly happens.

For People at Risk of Lymphedema

If your cancer surgery or treatment has put you at risk for lymphedema, learn what might help reduce your risk of developing it.

For People with Lymphedema

If you've been diagnosed with lymphedema after cancer surgery or treatment, learn important ways to help manage it.