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The impact of locoregional recurrences and distant metastases on the survival of patients with papillary thyroid carcinoma
Author(s) -
Su DengHuang,
Chang ShuHui,
Chang TienChun
Publication year - 2015
Publication title -
clinical endocrinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 147
eISSN - 1365-2265
pISSN - 0300-0664
DOI - 10.1111/cen.12511
Subject(s) - medicine , thyroid carcinoma , proportional hazards model , hazard ratio , lymph node , multivariate analysis , retrospective cohort study , cohort , carcinoma , oncology , urology , gastroenterology , thyroid , confidence interval
Summary Objective Some patients with papillary thyroid carcinoma ( PTC ) would suffer from locoregional recurrences or distant metastases. This study was aimed to elucidate the impacts of locoregional recurrences and distant metastases on these patients' survival. Design Retrospective hospital‐based cohort study. Population Data were collected from 1636 subjects with PTC at National Taiwan University Hospital between 1985 and 2007. Measurements Overall and disease‐specific survival curves were estimated by the Kaplan–Meier method. Time‐independent and time‐dependent prognostic factors were included simultaneously in multivariate analyses using Cox models. Results Overall survival ( OS ) rates at 10‐ and 20‐years were 90% and 76%, respectively. The 10‐ and 20‐year disease‐specific survival ( DSS ) rates were 95% and 90%, respectively. Our multivariate analyses identified that older age, distant metastases (hazard ratio, HR : 6·69, 95% CI : 4·40–10·18), locoregional recurrences ( HR : 1·88, 95% CI : 1·22–2·89), lymph node metastases, massive extrathyroid extension, male gender and larger tumour size (>4 cm) were significantly associated with poorer OS . Older age, distant metastases ( HR : 15·03, 95% CI : 8·31–27·21), locoregional recurrences ( HR : 3·63, 95% CI : 2·03–6·51), massive extrathyroid extension, male gender and larger tumour size (>4 cm) were independently related to worse DSS . The performance of high‐dose 131 I ablation had a protective effect on OS and DSS . Conclusion The locoregional recurrences had a moderately harmful impact on OS and DSS , but age and distant metastases were the major decisive factors for OS and DSS . High‐dose 131 I ablation had a protective role. However, lymph node dissection did not alter the prognosis whenever lymph node metastases only influenced OS .