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In our study, no significant difference in lipid parameters was determined between patients with PCOS and healthy controls. In our study, we did not observed any difference in CIMT measurements and TAFI levels between patients with PCOS and healthy controls that can be explained by their low ages and short duration of PCOS.

HEAD AND NECK IMAGINGORIGINAL ARTICLE PURPOSE We aimed to compare the ultrasonographic and laboratory parameters of euthyroid patients who have only positive antithyroid autoantibody test results with those of patients with a hypothyroid status of Hashimoto's thyroiditis (HT). MATERIALS AND METHODSThirty-five patients with newly diagnosed HT, 35 euthyroid patients who have autoantibodies against thyroid peroxidase (TPOAb) and/or thyroglobulin (TgAb), and 40 controls were enrolled in the study. Plasma free T3, free T4, thyroid stimulating hormone, TPOAb, and TgAb levels were obtained retrospectively. For gray-scale ultrasonography, each thyroid gland of all individuals graded with gray-scale grading (GSG), which was determined according to the gland size, parenchymal structure, echogenicity, micronodulation, contour irregularity, and existence of hyperechoic septa. For Doppler analysis, the peak systolic velocity (S), resistive index (RI), and pulsatility index (PI) values were obtained from the superior thyroid artery (STA) and intrathyroidal artery (ITA). The color pixel ratio (CPR), which was computationally evaluated from a power Doppler image of all individuals, was used for quantification of the intrathyroidal vascularity. RESULTSAlthough the mean GSG values were higher in the HT and antibody-positive groups than they were in the control group, there was no significant difference between the HT and antibody-positive groups. The three study groups demonstrated no statistically significant difference with regard to the S, RI, or PI variables obtained from the STAs and ITAs. Although the CPR values were highest in the HT group, the difference between the HT and antibody-positive group did not reach statistical significance. CONCLUSIONThe euthyroid antibody-positive group revealed gray-scale and Doppler ultrasonographic findings that were similar to those of the HT group. Hashimoto's thyroiditis (HT), first described by Hakaru Hashimoto in 1912, is an autoimmune disease that is characterized by the lymphocytic infiltration of the thyroid gland (1). HT is the leading cause of hypothyroidism (2). Typical laboratory features detected in HT include a reduction in the blood thyroxine (FT4) and triiodothyronine (FT3) levels and the elevation of thyroid stimulating hormone (TSH), antithyroid peroxidase autoantibodies (TPOAb), and antithyroglobulin autoantibodies (TgAb). Although rarely performed for this purpose, a definite diagnosis is based on a pathological demonstration of the lymphocytic infiltration of the gland. Ultrasonography (US) is a cross-sectional imaging modality that provides valuable anatomic information in evaluating the gland size and echo structure and in assessing possible thyroid nodules in HT. The usage of Doppler US is limited in the diagnosis of thyroiditis, although it helps assessing intranodular vascularity (if any nodule is present) and the vascularity of the gland.US has been used in HT since the 1990s. Since then, many studies have been performed using the gray-scale and Doppler US parame...