Радиационная гигиена (Sep 2015)
DEPENDENCE OF THYROID CANCER MORBIDITY FROM GENDER, AGE AND EXPOSURE DOSE FOR THE POPULATION AFFECTED IN CONSEQUENCE OF THE CHERNOBYL ACCIDENT
Abstract
The paper presents an assessment of radiation factor role for the thyroid cancer forming at persons exposed by the Chernobyl accident at the age from 0 to 18 years. Investigated cohort was formed from 2916 persons exposed in consequence of the Chernobyl accident during childhood and adolescence; it was stratified in 3 age groups and 4 dose intervals. All investigated persons passed through the deep double examination during the period from 1997 to 2004. Information about absorbed exposure doses for thyroid gland, calculated on the base of direct measurements in May and June 1986 was available for all persons. The increase of thyroid cancer morbidity for the boys and girls exposed by the Chernobyl accident at the age from 0 to 18 years with the increase of dose was revealed as the result of conducted radiation and epidemiologic survey. Excess relative risk for the male persons varied from 4.81 per 1.0 Gy at the age of 11 and older to 15.62 per 1.0 Gy for the age group from 4 to 10 years. For the female persons ERR was 5.37 per 1.0 Gy for the age group from 4 to 10 years and 8.32 per 1.0 Gy for the age of 11 and older.
