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Infant's bilobar thyroid agenesis and mother's I-131 accidental administration
Shuquan Zhao1, Xiao Chen, Guoying Zhu
1Institute of Radiation Medicine, Fudan University, Xietu road, 200032 Shanghai, China. chx_win@hotmail.com
Abstract:
Bilobar thyroid agenesis is one of rare diseases. Genetic and environmental factors may associate with bilobar thyroid agenesis. But the mechanism is still not completely understood. It had been showed that I-131 administration during pregnancy may induce thyroid dysfunction in newborn. Here we reported a case of female hospital staff who received I-131 accidently during (10-12th gestational weeks) and after her pregnancy. The absorbed dose to fetus was higher than 30mGy. At birth, the infant was found to have no thyroid. It was speculated that the fetal thyroid agenesis may be related with mother' I-131 administration during pregnancy. In addition, this case report also indicated that the radiation dose should be minimized to any developing embryo.
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