Abstract
OBJECTIVE: To characterize a cohort of pediatric thyroid cancer patients, focusing on clinical features and outcomes stratified by age. Subjects and. METHODS: This retrospective analysis included 63 pediatric differentiated thyroid cancer patients treated at a Portuguese pediatric reference hospital over a period of 20 years. Data extracted from clinical records covered demographics, clinical presentation, family history, tumor characteristics, treatment modalities, complications, disease status, and survival outcomes. Patients younger than 12 years were compared to those aged 12 and older. RESULTS: The mean age at diagnosis of the sample was 14.5 years, with a preponderance of female patients. Clinical presentation varied significantly between age groups; younger patients were more likely to present palpable cervical lymph nodes, while older patients frequently had solitary thyroid nodules. Family history and identifiable risk factors were similar across groups. However, older patients had higher rates of prior neoplasia and radiation exposure. Age also influenced surgical treatment and outcomes, including complications and recurrence rates. CONCLUSION: Our findings corroborate previous evidence on the predominance of papillary carcinoma and the association between radiation exposure and thyroid cancer. Younger patients demonstrated more aggressive tumor characteristics and higher recurrence rates, underscoring the need for age-specific management strategies. Early detection, comprehensive surgical intervention, and multidisciplinary follow-up are essential for achieving optimal outcomes.