Adjuvant External Beam Radiotherapy and Histopathologic Prognostic Factors in Tall Cell Papillary Thyroid Carcinoma

DFS, CSS, and OS were not different between patients who received EBRT compared to RAI only in this high-risk subgroup of patients. Short interval follow-up for the EBRT group and significant age differences between the EBRT and RAI cohorts may confound results. Given the significant association of advanced age with CSS, an expanded, age-matched cohort analysis is underway.