[Some environmental and hygienic aspects of preschool children's health in an industrial town].

The results of a medical genetic study of the spread of congenital morphogenetic types (CMGT) among 3-7-year-old children living in Magnitogorsk whose territory is highly polluted with chemical compounds are presented. In Magnitogorsk, the mean of CMGT cases per child is 2.89, which is much greater than the respective values for environmentally favorable cities and towns in Russia. The most common signs are as follows: diastema (137.79 cases per 1000 children), clinodactyly (135.98 per 1000), epicanthus (122.44 per 1000), and wide umbilical ring (110.71 per 1000).