Abstract
To investigate the association between survival outcomes and clinicopathological factors, including pathological restaging based on the UICC8th, among patients with recurrence differentiated thyroid carcinoma undergoing salvage surgery of local site. A total of 54 patients who underwent salvage surgery of local site for recurrence differentiated thyroid carcinoma were enrolled. The optimal cutoff ages at salvage surgery for predicting death and cancer-specific death were determined by receiver operating curve analysis. Overall and cancer-specific survivals were determined using log-rank test and Cox's proportional hazards model. Univariate analysis showed that age and the presence of distant metastasis at salvage surgery were significantly associated with overall survival (p=0.01 and p<0.05, respectively) and cancer-specific survival (p=0.02 and p=0.01, respectively). The optimal cutoff age at salvage surgery for predicting the detection of both death (p=0.01) and cancer-specific death (p=0.02) was 65 years. Multivariate analysis showed that age ≥65 years and the presence of distant metastasis were significantly associated with shorter overall survival (p<0.01 and p=0.03, respectively) and shorter cancer-specific survival (p<0.01 and p=0.01, respectively). Older age and the presence of distant metastasis at salvage surgery of local site were identified as predictors for poor survival outcomes in recurrence differentiated thyroid carcinoma.
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