[Structural and functional status of the hypophyseal-thyroid system in prenatally irradiated children]. / Strukturno-funktsional'nyi stan gipofizarno-tyreoïdnoï systemy u ditei, oprominenykh vnutrishn'outrobno.

In order to evaluate the morphologic-and-functional state of the hypophysis-thyroid system long after the Chernobyl accident we examined 1491 children from the northern territories of the Zhitomir region. Of these, 261 had not been in utero exposed to radioiodine, 1230 pediatric subjects proved to be postconception-exposed. In utero radioiodine has not been found to affect the thyroid size in any noticeable way. The degree of structural-and-functional indices for the thyreostat system in prenatally irradiated children depends on the stage of the thyroid development just when there happened to be an exposure to radioiodine.