Clinical data: a 55-year-old woman referred for evaluation of a newly discovered nodule.

Palpation: a firm nodule in the right lobe.

Functional state: euthyroidism with TSH 1.90 mIU/L.

Ultrasonography: there was a hypoechogenic nodule in the right lobe. The nodule presented halo sign, perinodular blood flow and had irregular borders.

Cytology: Hürthle-cell tumor with greater than the average risk for malignancy.

Histopathology. Hürthle-cell variant of encapsulated papillary carcinoma.