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Supplementary tables from: Long-term outcomes of patients diagnosed with differentiated thyroid cancer in childhood and young adulthood

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Oct 02, 2025 version files 5.75 KB

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Abstract

Rates of pediatric differentiated thyroid cancer (DTC) in the United States have been increasing while studies on this population remain limited by inconsistent age cut-offs, short follow-up periods, or relative lack of clinical data. In this manuscript, we report long-term outcomes in patients diagnosed with DTC at age 20 years old and younger.

155 patients were included with a median age at diagnosis of 17 years (9 to 20 years). The frequency of distant metastasis and larger tumor size were inversely related to age at diagnosis (overall stage p = 0.045, T-stage (size of the primary tumor ± invasion) p = 0.001). The median duration of follow-up was 16 years (1 to 63 years) and at last follow-up, 52.3% of patients had excellent response and disease specific mortality was 0%. There was no difference in response to therapy based on histologic subtype or birth sex; however, younger age at diagnosis was associated with worse response (p = 0.046). Patients with over 50 years of follow-up (n = 9) had median of 36 years of stability, with progression occurring in 6 out of 9 (67%) patients.