Radioiodine Therapy During Breastfeeding

  • Hakan Demir


In a 34-year-old female patient, 1.2 cm thyroid nodule was detected in the right lobe of the thyroid in neck ultrasound. Classical type of thyroid papillary carcinoma was confirmed after histopathological examination of thyroidectomy specimens.

Radioiodine ablation had been planned. However, the patient had been breastfeeding. Since radioiodine is contraindicated, breastfeeding had been ceased. In order to expedite of delectation period, cabergoline was used. Tc-99m (technetium) pertechnetate scintigraphy was performed to demonstrate any mammary uptake of the patient before ablation. There was no Tc-99m pertechnetate uptake in mammary glands. The patient had been given 100 mCi I-131 for ablation. At post-ablative whole-body I-131 scintigraphy, there was no pathological uptake both in the neck region and in mammary glands.

In summary in women who are breastfeeding, lactating must be stopped before radioiodine treatment (ablation or metastasis). Some lactation inhibition medications could be used in order to quicken the procedure. In order to control any mammary gland uptake, I-123 or Tc-99m pertechnetate scintigraphy could be used.


Thyroid cancer Papillary carcinoma Radioiodine Mammary gland Lactation Breastfeeding I-131 Sodium iodide symporter 


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© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Hakan Demir
    • 1
  1. 1.Department of Nuclear Medicine, School of MedicineKocaeli UniversityKocaeliTurkey

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