Clinical data: A 64-year-old woman was referred for a follow-up examination. Aspiration cytology was performed for 10-ys from a lesion with a maximal diameter of 8 mm-s and resulted in benign lesion. She had no complaints.

Palpation: a small, not firm nodule in the right lobe.

Functional state: euthyroidism with TSH 0.73 mIU/L.

Ultrasonography revealed a hypoechogenic nodule with microcalcifications in the ventro-lateral part of the right thyroid. The nodule did not present a halo sign while did a combined perinodular and intranodular vascular pattern.

Cytological report: suspicion of a Hürthle-cell tumor.

Histopathology disclosed Hürthle-cell adenoma.

Comments. The cytological pattern itself might correspond to either a hyperplastic nodule or an oxyphilic adenoma. The vascular pattern, i.e. the presence of perinodular blood flow stood for a tumor.