Hormonal contraception in women with diffuse nontoxic goiter and autoimmune thyroiditis
The article considers the influence of combined oral contraceptives on size and function of thyroid gland in women of reproductive age. We examined 215 women, taking low dose and microdose combined oral contraceptives for 12 months as monotherapy or in combination with potassium iodide. The first group consisted of 75 women with diffuse nontoxic goiter, second – of 70 women with autoimmune thyroiditis. Control group consisted of 70 women without pathology of thyroid gland. Prior to therapy with combined contraceptives and after 12 months of treatment, we determined serum levels of free triiodothyronine, free thyroxine, and thyrotropin releasing hormone, antibodies to thyroid peroxidase and antibodies to thyroglobulin (ELISA) and performed sonography of thyroid gland. Results of our study suggest that combined oral contraceptives may increase the size of thyroid gland among women with diffuse nontoxic goiter without changing its function. In women with autoimmune thyroiditis, application of combined oral contraceptive significantly decreases blood levels of autoantibodies to thyroid peroxidase and thyroglobulin. Application of combined oral contraceptives in healthy women doesn’t influence the size and function of thyroid gland.