[Radioimmunoassay in the diagnosis of thyroid cancer].

The paper is concerned with a study of the concentration of thyrotropic hormone (TTH), thyroxine, triidothyronine, thyroxine-binding globulin (TBG), thyroglobulin (TG) and carcinoembryonic antigen (CEA) in the blood of 69 patients with benign and malignant thyroid tumors. It has been established that the determination of TTH and TBG level can be used as an additional criterion to define the nature of a tumor process in the thyroid gland. A study of TTH and TG levels is of diagnostic importance in patients with recurrences and metastases of thyroidal cancer to the lungs. A study of the level of CEA in the blood is an important parameter in the control over the efficacy of thyroid cancer treatment.