We have demonstrated findings of autoimmune thyroid disease at markedly increased frequency in a population of children with poor iodine nutriture who were exposed to low level radiation, compared to a more iodine deficient population not so exposed. These results suggest that low level radiation may induce thyroid gland changes in children who have inadequate iodine intake nutriture and reinforce the importance of adequate dietary iodine.

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Two hundred healthy children aged 3-18 years were included in the study to determine liver stiffness indices by means of shear wave elastometry. The difference is significant when we compared shear wave velocity in children aged 3-6 years, on the one hand, and in children aged 7-18 years, on the other (p = 0.001). Liver stiffness indices in boys and girls were not different. As a result, liver stiffness indices in children in various age groups have been obtained, which can be recommended as normal ones for pediatric patients.

In this article the possibility to use ultrasound study with calculation of splenic mass index (SMI) to assess the immune status of children living in man-caused impact conditions is justified. A comparative analysis of the prevalence of enlarged spleen and SMI values CCM by ultrasound 1 225 children aged 3 to 17 years old, living in urban areas of the Perm region and in ecologically clean regions and in the resort area of the Republic of Abkhazia was carried out. The prevalence of personal anamnestic data was analyzed at 846 children, out of the total number. The number of sickly children in urban areas more and spleen have significantly increased in comparison with rarely ill. The SMI significantly increases the likelihood of changes of some indicators general and immunological analysis of blood.