Clinical presentation: A 59-year-old woman was referred for aspiration cytology of a nodule detected on evaluation of newly diagnosed subclinical hypothyroidism. Two lesions were described as suspicious nodules partly on the presence of microcalcifications, partly on their irregular shape.

Palpation: No abnormality.

Laboratory tests: TSH 4.71 mIU/L, aTPO 281 U/mL.

Ultrasound. The thyroid contained numerous smaller and larger hypoechogenic areas. These areas had irregular shape and puzzle-like borders. The right lesion presented not microcalcifications but connective tissue.

Aspiration cytology from the hypoechogenic lesions resulted in Hashimoto's thyroiditis.

Comment. The lesions are unlikely being nodules in pat hological sense.