Clinical presentation: A 79-year-old man was referred for an evaluation of a nodular goiter which was detected on a carotid Doppler examination.

Palpation: a firm nodule in the right lobe.

Functional state: euthyroidism with TSH 0.99 mIU/L.

Ultrasonography: revealed a hypoechogenic nodule with microcalcifications in the right thyroid. The nodule presented a halo sign and perinodular blood flow.

Cytological report: Hürthle-cell tumor.

Histopathology disclosed Hürthle-cell adenoma.