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Relationship of prognostic markers of differentiated thyroid cancer (DTC) to serum TSH concentration. Prognostic markers assessed were tumor size (A), neck nodal metastases (B), extrathyroidal extension (C), and distant metastases (D). The center circles represent geometric means for serum TSH, and whiskers represent confidence intervals. *Statistically significant differences between groups (Bonferroni-corrected for extrathyroidal extension).
