Clinical data: A 25-year-old woman was referred for evaluation of a thyroid nodule. The lesion was detected on evaluation performed because the patient planned to be pregnant.

Palpation: The right lobe was suspicious containing a nodule.

Functional state: minimally elevated TSH (4.80 mIU/L) and normal anti-TPO (1.1 U/mL).

Ultrasonography. The thyroid was echonormal. There was a hypoechogenic lesion with lobulated margins in the central part of the right thyroid. The lesion did not present blood flow.

Cytology resulted in papillary carcinoma.

A right lobectomy was performed. Histopathology disclosed a solitary focus of papillary carcinoma with a maximal diameter of 9 mm and mild degree of lymphocytic thyroiditis in the extranodular parenchyma.