No Adverse Effects After Radioiodine Treatment at 3 Weeks of Pregnancy.

Clin Nucl Med

From the *Division of Clinical Pharmacology, Department of Medicine, University Hospital Centre Zagreb, Zagreb; †Department of Biotechnology, University of Rijeka, Rijeka; and ‡School of Medicine, University of Zagreb, Zagreb, Croatia.

Published: December 2016

Radioactive iodine is used for the treatment of hyperthyroidism. Because it accumulates in the fetal thyroid, its administration during pregnancy may cause severe and potentially irreversible hypothyroidism in neonates, with consequent mental retardation, and it is contraindicated during the whole pregnancy. We present a case of a pregnant woman inadvertently treated with 1 mCi (37 MBq) of I in the earliest period of pregnancy and subsequently gave birth to a male infant without signs or symptoms of hypothyroidism or any other damage. This case illustrates that when radioactive iodine administration happens around the third week of gestation pregnancy outcome can be normal.

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http://dx.doi.org/10.1097/RLU.0000000000001376DOI Listing

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