Abstract
Purpose: To systemically investigate the prognostic value of pre-ablation stimulated thyroglobulin (s-Tg) in children and adolescents with differentiated thyroid cancer. Methods: Clinical records from 118 children and adolescents were retrospectively reviewed. Results: The median age was 16 years, and the majority were female (79.7%). All children and adolescents underwent total thyroidectomy and received radioactive iodine therapy. After a median follow-up of 5.3 years, 68 (57.6%) patients were disease free, while 50 patients (42.4%) had persistent/recurrent disease. In multivariate analysis, pre-ablation s-Tg and M1 were the independent predictive factors for persistent/recurrent disease. According to the receiver operating curve analysis, the best pre-ablation s-Tg cutoff to predict disease-free status was 17.8 ng/mL with a negative predictive value of 96.8%. Integration of pre-ablation s-Tg into American Thyroid Association pediatric risk categories indicated that the presence of pre-ablation s-Tg ≤17.8 ng/mL was associated with a decreased chance of having persistent/recurrent disease in intermediate- and high-risk patients (22.6% to 2.6% in intermediate-risk patients, and 64.4% to 5.6% in high-risk patients). Conclusions: Our findings suggest that pre-ablation s-Tg has the capability of predicting the clinical outcomes in children and adolescents with thyroid cancer.
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