Low: Depends on where the lymph nodes are being removed. Full axillary lymph node surgery has a 10% or less chance of lymphedema. Full axillary lymph node surgery is not as common any more. Groin lymph node dissection could also rarely cause leg lymphedema.
Answered 3/20/2012
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Less-and-Less Now: Lymphedema secondary to breast cancer surgery is more related to the number of lymph nodes removed +/- radiation to the armpit rather than the presence or absence of cancer within the nodes. When a traditional axillary dissection is performed, the risk is app. 25%. This rate is <5% if only a few nodes are removed, as we often do with sentinel lymph node biopsy.
Answered 10/4/2016
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