Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer

Abstract Background Spread through air spaces (STAS) is a pattern of invasion recently identified in non‐small cell lung cancer (NSCLC), with a poor prognosis. However, the predictive impact of STAS in stage IB NSCLC is not well understood. This investigation aims to assess the prognostic influence...

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Main Authors: Zixuan Chen, Xianqiao Wu, Tianzheng Fang, Zhen Ge, Jiayuan Liu, Qinglong Wu, Lin Zhou, Jianfei Shen, Chengwei Zhou
Format: Article
Language:English
Published: Wiley 2023-07-01
Series:Cancer Medicine
Subjects:
Online Access:https://doi.org/10.1002/cam4.6211
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author Zixuan Chen
Xianqiao Wu
Tianzheng Fang
Zhen Ge
Jiayuan Liu
Qinglong Wu
Lin Zhou
Jianfei Shen
Chengwei Zhou
author_facet Zixuan Chen
Xianqiao Wu
Tianzheng Fang
Zhen Ge
Jiayuan Liu
Qinglong Wu
Lin Zhou
Jianfei Shen
Chengwei Zhou
author_sort Zixuan Chen
collection DOAJ
description Abstract Background Spread through air spaces (STAS) is a pattern of invasion recently identified in non‐small cell lung cancer (NSCLC), with a poor prognosis. However, the predictive impact of STAS in stage IB NSCLC is not well understood. This investigation aims to assess the prognostic influence of STAS in stage IB NSCLC. Methods We reviewed 130 resected stage IB NSCLC between 2010 and 2015. Beyond the central tumor edge, lung parenchymal air gaps containing cancer cells were identified as STAS. In order to estimate recurrence‐free survival (RFS) and overall survival (OS), Cox models and Kaplan–Meier techniques were utilized. Logistic regression analysis was employed to define the factors influencing STAS. Results Of 130 patients, 72 (55.4%) had STAS. STAS was a significant prognosticator. Kaplan–Meier method showed that STAS‐positive patients had a significantly lower OS and RFS than STAS‐negative patients (5‐year OS, 66.5% vs. 90.4%, p = 0.02; 5‐year RFS, 59.5% vs. 89.7%, p = 0.004) In a semiquantitative assessment, the RFS and OS were shorter in survival analysis when STAS increased (5‐year RFS, 89.7%, no STAS, 61.8%, low STAS, 57.2%, high STAS, p = 0.013; 5‐year OS, 90.4%, no STAS, 78.3%, low STAS, 57.2%, high STAS, p = 0.002). The association between STAS and poor differentiation, adenocarcinoma, and vascular invasion (p value was <0.001, 0.047, and 0.041, respectively) was statistically significant. Conclusions The STAS is an aggressive pathological feature. RFS and OS could be significantly reduced by STAS, while it also serves as an independent predictor.
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spelling doaj.art-c4797b6708ba44589ec2a9860c02a3262023-08-11T14:51:17ZengWileyCancer Medicine2045-76342023-07-011214152461525510.1002/cam4.6211Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancerZixuan Chen0Xianqiao Wu1Tianzheng Fang2Zhen Ge3Jiayuan Liu4Qinglong Wu5Lin Zhou6Jianfei Shen7Chengwei Zhou8Thoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaCardiothoracic Surgery Department Taizhou Hospital of Zhejiang Province, Wenzhou Medical University Linhai ChinaThoracic Surgery Department The First Affiliated Hospital of Ningbo University Ningbo ChinaAbstract Background Spread through air spaces (STAS) is a pattern of invasion recently identified in non‐small cell lung cancer (NSCLC), with a poor prognosis. However, the predictive impact of STAS in stage IB NSCLC is not well understood. This investigation aims to assess the prognostic influence of STAS in stage IB NSCLC. Methods We reviewed 130 resected stage IB NSCLC between 2010 and 2015. Beyond the central tumor edge, lung parenchymal air gaps containing cancer cells were identified as STAS. In order to estimate recurrence‐free survival (RFS) and overall survival (OS), Cox models and Kaplan–Meier techniques were utilized. Logistic regression analysis was employed to define the factors influencing STAS. Results Of 130 patients, 72 (55.4%) had STAS. STAS was a significant prognosticator. Kaplan–Meier method showed that STAS‐positive patients had a significantly lower OS and RFS than STAS‐negative patients (5‐year OS, 66.5% vs. 90.4%, p = 0.02; 5‐year RFS, 59.5% vs. 89.7%, p = 0.004) In a semiquantitative assessment, the RFS and OS were shorter in survival analysis when STAS increased (5‐year RFS, 89.7%, no STAS, 61.8%, low STAS, 57.2%, high STAS, p = 0.013; 5‐year OS, 90.4%, no STAS, 78.3%, low STAS, 57.2%, high STAS, p = 0.002). The association between STAS and poor differentiation, adenocarcinoma, and vascular invasion (p value was <0.001, 0.047, and 0.041, respectively) was statistically significant. Conclusions The STAS is an aggressive pathological feature. RFS and OS could be significantly reduced by STAS, while it also serves as an independent predictor.https://doi.org/10.1002/cam4.6211IB stage non‐small cell lung canceroverall survivalrecurrence‐free survivalspread through air spaces
spellingShingle Zixuan Chen
Xianqiao Wu
Tianzheng Fang
Zhen Ge
Jiayuan Liu
Qinglong Wu
Lin Zhou
Jianfei Shen
Chengwei Zhou
Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
Cancer Medicine
IB stage non‐small cell lung cancer
overall survival
recurrence‐free survival
spread through air spaces
title Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
title_full Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
title_fullStr Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
title_full_unstemmed Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
title_short Prognostic impact of tumor spread through air spaces for T2aN0 stage IB non‐small cell lung cancer
title_sort prognostic impact of tumor spread through air spaces for t2an0 stage ib non small cell lung cancer
topic IB stage non‐small cell lung cancer
overall survival
recurrence‐free survival
spread through air spaces
url https://doi.org/10.1002/cam4.6211
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