Serum Tg and TSH levels.

aData are medians with range.bTg-on: Tg during thyroid hormone suppression therapy.cTg-off: Tg after 6 weeks thyroid hormone withdrawal.dN = 1: RhTSH stimulated Tg measurement, 4 months after radioiodine treatment was performed in one of three patients. One patient refused, the second patient was not stimulated because of extensive disease.eN = 2: RhTSH stimulated Tg was ≥1.0 ng/ml in 2 patients, these patients were referred for imaging.fN = 14: RhTSH stimulated Tg was ≥1.0 ng/ml in 15 patients, imaging was performed in 14 patients. In one patient imaging was not performed because of pregnancy wish.gData are medians with interquartile range (25th and 75th centile)