Clinical presentation: a 24-year-old woman was referred for an evaluation of weight loss. She had a delivery 5 months before the present examination.

Palpation: no abnormality.

Functional state: moderate degree of hypothyroidism with TSH 0.01 mIU/L, FT4 30.8 pM/L. TRAK 1.6 U/L (normal value below 1.5), aTPO 1 U/mL.