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[Radiography, ultrasonic diagnosis and radioimmunologic analysis in the differential diagnosis of diffuse goiter and thyroiditis].

Radionuclide functional dynamic investigation of the thyroid with 99mTc-pertechnetate was performed in 62 patients with diffuse euthyroid and toxic goiter, thyroiditides and in 17 controls. An analysis of the results of investigations and their comparison with clinical findings, an echo- and scintigraphic picture of the thyroid as well as with the levels of total thyroxine, triidothyronine and thyrotropin of the hypophysis showed that the results of a dynamic test of pertechnetate trapping corresponded, to a large extent, to the clinical status of patients with diffuse thyroid changes, correlated with an echographic picture and made it possible to define significant radiodiagnostic signs of thyroiditides. The proposed methods made it possible to increase the volume and improve the quality of diagnostic information in functional investigations of the thyroid status raising the efficacy of diagnosis of thyroid diseases and reducing radiation exposures and the time of investigations.