Endocrine oncology

Long-Term Outcomes of Patients Diagnosed With Differentiated Thyroid Cancer in Childhood and Young Adulthood

J Clin Endocrinol MetabPublished Retrospective cohort study

Authors' conclusion

Patients diagnosed with DTC as children or young adults have outstanding long-term survivorship, but may experience disease progression later in life, suggesting that long-term follow-up might be appropriate for this population. Younger age at diagnosis was identified as a risk factor for distant metastases and poorer response to therapy.

Study context

Population
Patients diagnosed with differentiated thyroid cancer (DTC) at age 20 years or younger; median age at diagnosis 17 years (9–20 years)
Participants
155 patients
Outcome
Long-term outcomes:
  • Response to therapy
  • Disease-specific mortality
Follow-up
Last
Methodological detailslong-term follow-up
  • Long-term follow-up

Main finding

As reported in the abstract

Outcomes at last follow-up · median follow-up 16 years (1-63 years)

Excellent response

52.3%

Disease-specific mortality

0%

Observational data: associations, not effects.

Further findings

Distant metastasis and larger tumor size vs age at diagnosis

Inversely related to age at diagnosis; overall stage
P = 0.045
Inversely related to age at diagnosis; T-stage
P = 0.001

Response to therapy by histologic subtype, birth sex and age

Younger age at diagnosis associated with worse response
P = 0.046
No difference by histologic subtype or birth sex

Patients with >50 years of follow-up (n = 9)

Median years of stability
36
Progression
6 out of 9 (67%)

Original publication

Long-Term Outcomes of Patients Diagnosed With Differentiated Thyroid Cancer in Childhood and Young Adulthood. J Clin Endocrinol Metab. Published 18 September 2025. doi:10.1210/clinem/dgaf522

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