The radiation damage of thyroid gland may be the reason of increase of frequency non-Hodgkins lymphoma and others hematological diseases

Distribution of autoimmune thyroidites in the patients with diseases of blood system is investigated. Antimicrosomal antibodies served as an indicator of autoimmune thyroidites. Autoimmune thyroidites was found more often in patients with various hematological diseases than in the control group. A hypothesis is advanced that the increase in the frequency of some hematological diseases in the residents affected by the Chernobyl accident can be attributed not only to the influence of the radiation on blood system, but also to the damage of thyroid glands.