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Stop BF 6 weeks before I131 treatment

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  • Stop BF 6 weeks before I131 treatment

    What is the reason of advising women to stop BF 6 weeks before I131 treatment for thyroid cancer?

  • #2
    danilatou,

    The reason to stop BF for weeks prior to receiving I-131 is to dry up the milk supply because radioiodine concentrates in breast milk. At least 26-45% of the dose ends up in the breast, the cumulative exposure to breast tissues could be excessively high.The estimated dose of radioactivity to the breasts would give a "theoretical" probability of induction of breast cancer of 0.32%.

    Sandra Lovato R.N.
    InfantRisk Center
    806-352-2519

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