Fig. 1.

a–d. Thyroid parameters and body mass index in subclinically or overtly hyperthyroid patients (TSH < 0.4 mIU/l) with toxic adenoma, Graves’ disease or LT4-treated carcinoma, stratified by their FT4 concentration (euthyroid vs hyperthyroid). The hormonal patterns differed between the treatment categories. FT4 concentrations were higher in the treated patients, deiodinase activity was markedly lower, but FT3 concentrations similar. Body mass index was also different between diagnostic categories despite “normal” FT4. Statistical comparison between etiological groups overall and in FT4-subgroups is based on Kruskal-Wallis test.