Clinical presentation: a 52-year-old woman was referred for an evaluation of a thyroid nodule detected on ultrasound. She had mild neck discomfort for a month and visited the radiological department.

Palpation: no abnormality, the thyroid was neither tender nor firm.

Functional state: euthyroidism with TSH 1.39 mIU/L, FT4 11.6 pM/L.

Ultrasonography: both thyroids were echonormal. There were several minimally hypoechogenic areas in the right, and hypoechogenic areas in the left lobe. The borders of these lesions were ill-defined. The vascularization was decreased.

Cytology was performed from the left hypoechogenic lesion which was described as a nodule on previous radiological investigation. Cytological diagnosis: benign, subacute, granulomatous, de Quervain's thyroiditis.

We indicated aTPO determination which yielded normal result (1 U/mL) and erythrocyte sedimentation rate which was elevated (71 mm/H).

Comment: we did not give any therapy because the patient had neither neck complaints nor abnormal thyroid hormone levels. The sonographic pattern looked better, the size of the hypoechogenic areas had significantly decreased, and the vascularization became average 3 months later.