삼요오드티로닌 자가항체가 동반된 일차성 갑상선기능저하증 1예

Abstract

Antithyroid hormone autoantibodies can be present in the sera of patients with thyroid and non-thyroid disorders. Antithyroid hormone autoantibodies in a patient's serum interfere with radioimmunoassay of thyroid hormones. Clinically, this interference can result in discordance between the serum thyroid hormone levels and the clinical features of the patient, which can lead to misdiagnosis or inappropriate treatment. We experienced a woman who had primary hypothyroidism with unexpectedly high concentrations of serum total triiodothyronine (T(3)) and free T(3), and she had been treated for Graves' disease in the past. Through the use of a polyethylene glycol precipitation method, we detected the anti-triiodothyronine autoantibodies in her serum. We report on this case along with a review of the related literature.