Journal of Korean Society of Medical Ultrasound 1999;18(4): 329-334.
Ultrasonographic Evaluation of Hashimoto's Thyroiditis: Comparison of Size and Echo Change with Thy roid Function.
Kangrae Lee, Jae Hyun Cho, Yunjeong Kim, Hyunman Kim, Raewoong Park, Byungchul Kang, Jungho Suh
1Department of Diagnostic Radiology, Ajou University School of Medicine. choj@madang.ajou.ac.kr
2Department of Endocrinology, Ajou University, School of Medicine.
3Department of Pathology, Ajou University,School of Medicine.
4Department of Diagnostic Radiology, Ewha Womans University Hospital.
  Published online: January 1, 2001.
ABSTRACT
PURPPOSE: To demonstrate sonographic features of Hashimoto' s thyroiditis according to the thyroid function. MATERIALS AND METHODS: We reviewed 54 thyroid ultrasonographic examinations of untreated Hashimoto' s thyroiditis. We reviewed thyroid ultarasonographic examinations and focused on the presence of ill defined low echoic lesion and glandular enlargement. We performed another thyroid ultrasonographic examination of 14 healthy volunteers, in order to obtain normal size of thyroid gland. Comparision was made between these morphologic charecteristics and functional stage of the disease. RESULTS: The mean diameter of thyroid gland was 2.16 +/-0.43cm in patients with Hashimoto' s thyroiditis, and 1.41 +/-0.42cm in normal control group of the thyroid gland. There was no statistically significant relationship between thyroid function and size. There was morphologic abnormalities in 46 patients (85%). Among them, 7 patients revealed diffuse low echogenity in the entire thyoid gland, 32 patients showed peripherally located, ill defined focal hypoechoic lesion, and 7 patients showed solitary or multiple, well defined nodular lesions. Decreased echogenity of the thyroid gland was related to hypothyroid status. CONCLUSION: Hashimoto's thyroiditis has specific morphologuc charecteristics in ultrasonographic features, which are well correlated with thyroid function.
Keywords: Thyroid US; Thyroid abnormalities; Thyroid inflammation; Thyroid function; Thyroiditis
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