A Novel Criterion for Lymph Nodes Dissection in Distal Pancreatectomy for Ductal Adenocarcinoma: A Population Study of the US SEER Database

Objective The aim of this study was to clarify the minimum number of examined lymph nodes (MNELNs) required to ensure the quality of lymph node detection and its impact on long-term survival in distal pancreatectomy for pancreatic ductal adenocarcinoma. Methods Clinicopathological characteristics an...

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Veröffentlicht in:Annals of surgical oncology 2022-03, Vol.29 (3), p.1533-1539
Hauptverfasser: Wang, Weishen, Shen, Ziyun, Zhang, Jun, Chen, Hao, Deng, Xiaxing, Peng, Chenghong, Xie, Junjie, Xu, Zhiwei, Shen, Baiyong
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container_end_page 1539
container_issue 3
container_start_page 1533
container_title Annals of surgical oncology
container_volume 29
creator Wang, Weishen
Shen, Ziyun
Zhang, Jun
Chen, Hao
Deng, Xiaxing
Peng, Chenghong
Xie, Junjie
Xu, Zhiwei
Shen, Baiyong
description Objective The aim of this study was to clarify the minimum number of examined lymph nodes (MNELNs) required to ensure the quality of lymph node detection and its impact on long-term survival in distal pancreatectomy for pancreatic ductal adenocarcinoma. Methods Clinicopathological characteristics and survival data of patients with resectable pancreatic cancer who underwent distal pancreatectomy between 2004 and 2017 were collected from the Surveillance, Epidemiology, and End Results database. The associations between the number of examined lymph nodes (ELNs) and number of positive lymph nodes (PLNs), stage migration, and overall survival were investigated through adjusted multivariate models with locally weighted scatterplot smoothing smoothing fitting curves and estimation of the structural breakpoints. Kaplan–Meier survival analysis and X-tile software were used to identify the ideal cut-off value for ELNs. Results In total, 2610 consecutive patients who underwent distal pancreatectomy between 2004 and 2017 were included in this study. The optimal ELN count according to the associations between the number of ELNs and number of PLNs, odds ratio for stage migration, or hazard ratio for overall survival were 19, 17, and 19, respectively. Furthermore, the optimal division of ELN count for maximum overall survival was divided into three populations (ELN ≤ 8, ELN 9–18, ELN ≥ 19) based on X-tile software. Conclusion A minimal count of 19 lymph nodes was demanded to guarantee the quality of lymph node examination in patients with distal pancreatectomy. Long-term survival could be delimited by MNELNs. A sufficient number of ELNs could improve the accuracy of cancer staging and reflect a better overall survival.
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Methods Clinicopathological characteristics and survival data of patients with resectable pancreatic cancer who underwent distal pancreatectomy between 2004 and 2017 were collected from the Surveillance, Epidemiology, and End Results database. The associations between the number of examined lymph nodes (ELNs) and number of positive lymph nodes (PLNs), stage migration, and overall survival were investigated through adjusted multivariate models with locally weighted scatterplot smoothing smoothing fitting curves and estimation of the structural breakpoints. Kaplan–Meier survival analysis and X-tile software were used to identify the ideal cut-off value for ELNs. Results In total, 2610 consecutive patients who underwent distal pancreatectomy between 2004 and 2017 were included in this study. The optimal ELN count according to the associations between the number of ELNs and number of PLNs, odds ratio for stage migration, or hazard ratio for overall survival were 19, 17, and 19, respectively. Furthermore, the optimal division of ELN count for maximum overall survival was divided into three populations (ELN ≤ 8, ELN 9–18, ELN ≥ 19) based on X-tile software. Conclusion A minimal count of 19 lymph nodes was demanded to guarantee the quality of lymph node examination in patients with distal pancreatectomy. Long-term survival could be delimited by MNELNs. A sufficient number of ELNs could improve the accuracy of cancer staging and reflect a better overall survival.</description><identifier>ISSN: 1068-9265</identifier><identifier>EISSN: 1534-4681</identifier><identifier>DOI: 10.1245/s10434-021-10797-2</identifier><identifier>PMID: 34622372</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Adenocarcinoma ; Breakpoints ; Breast Neoplasms ; Cancer ; Carcinoma, Pancreatic Ductal - pathology ; Carcinoma, Pancreatic Ductal - surgery ; Computer programs ; Dissection ; Epidemiology ; Female ; Humans ; Lymph Node Excision ; Lymph nodes ; Lymph Nodes - pathology ; Lymph Nodes - surgery ; Lymphatic Metastasis ; Lymphatic system ; Medicine ; Medicine &amp; Public Health ; Neoplasm Staging ; Oncology ; Pancreatectomy ; Pancreatic cancer ; Pancreatic Neoplasms - pathology ; Pancreatic Neoplasms - surgery ; Pancreatic Tumors ; Population studies ; Population-based studies ; Prognosis ; SEER Program ; Surgery ; Surgical Oncology ; Survival ; Survival analysis</subject><ispartof>Annals of surgical oncology, 2022-03, Vol.29 (3), p.1533-1539</ispartof><rights>Society of Surgical Oncology 2021</rights><rights>2021. 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Methods Clinicopathological characteristics and survival data of patients with resectable pancreatic cancer who underwent distal pancreatectomy between 2004 and 2017 were collected from the Surveillance, Epidemiology, and End Results database. The associations between the number of examined lymph nodes (ELNs) and number of positive lymph nodes (PLNs), stage migration, and overall survival were investigated through adjusted multivariate models with locally weighted scatterplot smoothing smoothing fitting curves and estimation of the structural breakpoints. Kaplan–Meier survival analysis and X-tile software were used to identify the ideal cut-off value for ELNs. Results In total, 2610 consecutive patients who underwent distal pancreatectomy between 2004 and 2017 were included in this study. The optimal ELN count according to the associations between the number of ELNs and number of PLNs, odds ratio for stage migration, or hazard ratio for overall survival were 19, 17, and 19, respectively. Furthermore, the optimal division of ELN count for maximum overall survival was divided into three populations (ELN ≤ 8, ELN 9–18, ELN ≥ 19) based on X-tile software. Conclusion A minimal count of 19 lymph nodes was demanded to guarantee the quality of lymph node examination in patients with distal pancreatectomy. Long-term survival could be delimited by MNELNs. 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Methods Clinicopathological characteristics and survival data of patients with resectable pancreatic cancer who underwent distal pancreatectomy between 2004 and 2017 were collected from the Surveillance, Epidemiology, and End Results database. The associations between the number of examined lymph nodes (ELNs) and number of positive lymph nodes (PLNs), stage migration, and overall survival were investigated through adjusted multivariate models with locally weighted scatterplot smoothing smoothing fitting curves and estimation of the structural breakpoints. Kaplan–Meier survival analysis and X-tile software were used to identify the ideal cut-off value for ELNs. Results In total, 2610 consecutive patients who underwent distal pancreatectomy between 2004 and 2017 were included in this study. The optimal ELN count according to the associations between the number of ELNs and number of PLNs, odds ratio for stage migration, or hazard ratio for overall survival were 19, 17, and 19, respectively. Furthermore, the optimal division of ELN count for maximum overall survival was divided into three populations (ELN ≤ 8, ELN 9–18, ELN ≥ 19) based on X-tile software. Conclusion A minimal count of 19 lymph nodes was demanded to guarantee the quality of lymph node examination in patients with distal pancreatectomy. Long-term survival could be delimited by MNELNs. A sufficient number of ELNs could improve the accuracy of cancer staging and reflect a better overall survival.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><pmid>34622372</pmid><doi>10.1245/s10434-021-10797-2</doi><tpages>7</tpages></addata></record>
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subjects Adenocarcinoma
Breakpoints
Breast Neoplasms
Cancer
Carcinoma, Pancreatic Ductal - pathology
Carcinoma, Pancreatic Ductal - surgery
Computer programs
Dissection
Epidemiology
Female
Humans
Lymph Node Excision
Lymph nodes
Lymph Nodes - pathology
Lymph Nodes - surgery
Lymphatic Metastasis
Lymphatic system
Medicine
Medicine & Public Health
Neoplasm Staging
Oncology
Pancreatectomy
Pancreatic cancer
Pancreatic Neoplasms - pathology
Pancreatic Neoplasms - surgery
Pancreatic Tumors
Population studies
Population-based studies
Prognosis
SEER Program
Surgery
Surgical Oncology
Survival
Survival analysis
title A Novel Criterion for Lymph Nodes Dissection in Distal Pancreatectomy for Ductal Adenocarcinoma: A Population Study of the US SEER Database
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