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Impact of paraaortic lymphadenectomy for endometrial cancer with positive pelvic lymph nodes: A Korean Radiation Oncology Group study (KROG 13-17)

Authors
 M.S. Yoon  ;  W. Park  ;  S.J. Huh  ;  H.J. Kim  ;  Y.S. Kim  ;  Y.B. Kim  ;  J.-Y. Kim  ;  J.-H. Lee  ;  J. Cha  ;  J.H. Kim  ;  J. Kim  ;  W.S. Yoon  ;  J.H. Choi  ;  M. Chun  ;  Y. Choi  ;  S.K. Chang  ;  K.K. Lee  ;  M. Kim  ;  J.-U. Jeong  ;  T.-K. Nam 
Citation
 EJSO, Vol.42(10) : 1497-1505, 2016 
Journal Title
 EJSO 
ISSN
 0748-7983 
Issue Date
2016
Abstract
Aim : We investigated the role of paraaortic lymph node dissection (PALND) in patients with stage IIIC1 endometrial carcinoma after surgery followed by adjuvant radiotherapy (RT) alone or chemoradiotherapy (CTRT). Methods : We performed a subgroup analysis in 151 patients treated with adjuvant pelvic RT. Paraaortic-recurrence free survival, disease-free survival (DFS) and overall survival (OS) were analyzed. Results : In adjuvant RT alone, PALND was significantly related to reduced risk of paraaortic recurrence (0% vs. 17.1%) and distant metastasis (4.5% vs. 19.5%) compared with the no PALND group. PALND affected 5-year DFS (90.2% vs. 58.9%, p = 0.016) and OS (100% vs. 83.1%, p = 0.022). For the CTRT group, the paraaortic recurrence rate was 19.5% for the no PALND group and 12.8% for the PALND group (p = 0.682). Of patients who underwent PALND in the CTRT group, less extensive PALND was significantly related to increased paraaortic recurrence (≤10 vs. >10 dissected LNs, 17.1% vs. 0%). In the no PALND group (n = 82), 5-year paraaortic-recurrence free survival was 79.4% for the CTRT group and 76.2% for the RT alone group (p = 0.941). In multivariate analysis, PALND was significantly associated with reduced risk of disease-specific death (HR, 0.50; 95% CI, 0.26?0.96; p = 0.037). Conclusion : PALND provided excellent paraaortic control and improved outcome in stage IIIC1 endometrial cancer with favorable tumor features treated with adjuvant RT alone. Less extensive PALND was associated with significantly increased paraaortic recurrence in patients with advanced tumor features treated with adjuvant CTRT. Combined CTRT did not affect disease control in the paraaortic region compared with RT alone.
Full Text
http://www.sciencedirect.com/science/article/pii/S0748798316306606
DOI
10.1016/j.ejso.2016.07.003
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Kim, Yong Bae(김용배) ORCID logo https://orcid.org/0000-0001-7573-6862
Cha, Ji Hye(차지혜)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/152950
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