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Radiologia Brasileira

Print version ISSN 0100-3984On-line version ISSN 1678-7099

Abstract

YAMASHIRO, Ilka; SAITO, Osmar de Cássio; CHAMMAS, Maria Cristina  and  CERRI, Giovanni Guido. Ultrasound findings in thyroiditis. Radiol Bras [online]. 2007, vol.40, n.2, pp.75-79. ISSN 0100-3984.  http://dx.doi.org/10.1590/S0100-39842007000200003.

OBJECTIVE: The aim of this study was to evaluate sonographic features of thyroid gland in patients with thyroiditis. MATERIALS AND METHODS: During a nine-month period, 38 patients previously diagnosed with thyroiditis by the Ultrasound Unit of "Instituto de Radiologia da Faculdade de Medicina da Universidade de São Paulo", São Paulo, SP, Brazil, were studied. Thirteen-six of these patients were women in the age range between 17 and 78 years. The following variables were observed and studied: thyroid volume, echogenicity, echotexture, and the presence of level VI chain lymph nodes (pre-tracheal, the preferential site of thyroid drainage), besides the gland dimensions. RESULTS: Thirteen patients had goiter; 37 of 38 thyroid glands presented heterogeneous echotexture and diffuse hypoechogenicity. Thyroiditis was diagnosed by laboratory tests in all patients. Level VI chain (pre-tracheal) lymph nodes were observed in 28 cases, all of them with reactional features. Of these cases, ten patients were submitted to fine needle aspiration biopsy, and the cytological result indicated inflammatory reaction. No case of nodule-simulating focal thyroiditis was found. CONCLUSION: The thyroid gland sonographic hypoechogenicity and heterogeneity, in association with the presence of cervical chain lymph nodes, constitute findings of great importance in the diagnosis of thyroiditis when correlated with clinical and laboratory tests findings.

Keywords : Ultrasound; Thyroid; Thyroiditis.

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