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Lymphoscintigraphy is a procedure to look at your lymphatic system. It identifies the first lymph node that receives drainage from your tumor site. This is called a sentinel node. The sentinel node tells healthcare providers if your cancer has spread. Lymphoscintigraphy can show if a blockage in your lymphatic system is causing lymphedema. It also helps your healthcare provider plan surgery or other treatments you may need. Lymphoscintigraphy may be done before surgery or during surgery.


Do not breastfeed for 12 hours after your procedure:

This allows the radiotracer to move out of your body completely. Radiation can be transferred to your baby through your breast milk.

Drink plenty of liquids and urinate often:

This helps flush the radiotracer out of your body.

Follow up with your healthcare provider as directed:

Write down your questions so you remember to ask them during your visits.

Contact your healthcare provider if:

  • You have redness or pain at the injection site that does not get better.
  • You have questions or concerns about your condition or care.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.