Clinical presentation: A 32-year-old woman was referred for evaluation. She was treated for hypothyroidism in her childhood. The therapy was ceased at the age of 20. Before childbearing she initiated a thyroid check.

Palpation. No abnormality.

Laboratory tests: TSH 0.83 mIU/L, aTPO 53 U/mL.

Ultrasonography. The thyroid was minimally hypoechogenic and presented more hypoechogenic areas. None of them fit to a nodule in pathological sense.

Suggestion. TSH determination in a year, in the event of pregnancy at once.