Clinical data: a 62-year old woman was presented with difficulties in swallowing.

Palpation: a nodule in the left lobe.

Functional state: euthyroidism with TSH 3.38 mIU/L.

Ultrasonography: the thyroids were echonormal. There was a moderately hypoechogenic and an echonormal lesion in the right lobe. The left lobe contained a large echonormal nodule. The nodule displayed a halo sign and perinodular blood flow and central cystic degeneration.

Cytology resulted in follicular tumor.

Histopathology disclosed follicular adenoma.