Endocrine Abstracts

JOINT1923

Objective: The aim of the study is to analyze the sonographic features of nodular Hashimoto thyroiditis (HT).

Methods and materials: In a retrospective study, the clinicohistopathologic and echographic (number, diameter, shape, margins, vascularity, halo) data of patients who underwent total or partial thyroidectomy and had a HT in the histopathological specimen, from the 1st of January 2018 to the 31st july 2023 were analyzed.

Results: Our serie includes 73 patients and 155 thyroid nodules. All the patients are female and the mean age is 47 years. 16 patients have a thyroid dysfunction. No patient have a personal history of neck irradiation. 12 patients have family history of thyroidectomy. The mean nodule diameter is 35,5 mm(4-68 mm). 59.3%of nodules are located in the right lobe while 40.6% are located in the left lobe. 43.2% are completely solid,10.3% are kystic and 46.4% have a mixed structure. 83.8% have an oval shape and 16.2% have a round shape. Nodules margins were sharp in 78.06% and indistinct in 21.9%. 16.12% are hyperechoic,54.19% are isoechoic,20.6% are moderately hypoechoic and 9.03% are very hypoechoic. 55.48% of nodules are surrounded by a thin halo and 44.5% does not. On color doppler,18\.6% of nodules showed peripheral hypervascularity,32.9% were diffusely hypervascular and 49.03% were isovascular. 7.06% of nodules have microcalcification while 9.67% have macrocalcification.

Conclusion: The sonographic appearance is variable but the most common aspect is an isoechoiec, isovascular and oval shaped nodule with sharp margins.