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What are the risks of a sentinel lymph node biopsy?

As with any surgery, there is a risk of bleeding, infection and poor wound healing. Fluid or blood could accumulate and require drainage. A small percentage of patients, less than 1%, may have an allergic reaction to the blue dye. There will be some blue staining in the breast skin for a few weeks to several months. You will also have blue urine for a few days, which is normal. There is a 2% to 3% chance of getting arm swelling (lymphedema) following a sentinel lymph node biopsy.
 
 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.