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Original Article
Lung and Thoracic cancer
The Incidence and Risk Factors of Chronic Pulmonary Infection after Radiotherapy in Patients with Lung Cancer
Yeonseok Choi, Jae Myoung Noh, Sun Hye Shin, Kyungjong Lee, Sang-Won Um, Hojoong Kim, Hongryull Pyo, Yong Chan Ahn, Byeong-Ho Jeong
Cancer Res Treat. 2023;55(3):804-813.   Published online January 3, 2023
DOI: https://doi.org/10.4143/crt.2022.1305
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study aimed to investigate cumulative incidence and risk factors associated with chronic pulmonary infection (CPI) development after radiotherapy for lung cancer.
Materials and Methods
We retrospectively analyzed 1,872 patients with lung cancer who received radiotherapy for lung cancer from 2010-2014, had a follow-up period of ≥ 3 months after radiotherapy, and did not have CPI at the time of radiotherapy. CPI was defined as pulmonary tuberculosis, non-tuberculous mycobacterial pulmonary disease, chronic pulmonary aspergillosis, or pulmonary actinomycosis. The cumulative incidence of CPI and overall survival (OS) were estimated using the Kaplan-Meier method, and a multivariable Cox proportional hazards analysis was performed to identify risk factors associated with CPI development.
Results
The median follow-up period was 2.3 years with OS rates of 55.6% and 37.6% at 2 and 5 years, respectively. CPI developed in 59 patients at a median of 1.8 years after radiotherapy, with cumulative incidence rates of 1.1%, 3.4%, 5.0%, and 6.8% at 1, 3, 5, and 7 years, respectively. A lower body mass index, interstitial lung disease, prior pulmonary tuberculosis, larger clinical target volume, history of lung cancer surgery or radiation pneumonitis, and use of inhaled corticosteroids were independent risk factors for CPI development.
Conclusion
The long-term survival rate of lung cancer patients receiving radiotherapy was not low, but the cumulative incidence of CPI gradually increased to 6.8% at 7 years after radiotherapy. Therefore, close monitoring of CPI development is required in surviving patients with risk factors.

Citations

Citations to this article as recorded by  
  • Chronic progressive pulmonary aspergillosis within the irradiated field after stereotactic body radiotherapy: two case reports
    Nao Mamuro, Noriko Kishi, Yukinori Matsuo, Masahiro Yoneyama, Hiroyuki Inoo, Minoru Inoue, Takashi Mizowaki
    International Cancer Conference Journal.2025; 14(2): 113.     CrossRef
  • Predictive nomogram for risk of pulmonary infection in lung cancer patients undergoing radiochemotherapy: development and performance evaluation
    Yujie Huang
    American Journal of Cancer Research.2025; 15(2): 781.     CrossRef
  • The Inter-Relationships Among the Risk Factors for Pulmonary Infection and the Diagnostic Utility of Inflammatory Markers in Patients with Non-Small Cell Lung Cancer
    Wenwen Qin, Tiebin You, Tai Guo, Ruixin Tian, Xiaoman Cui, Ping Wang
    Infection and Drug Resistance.2025; Volume 18: 1111.     CrossRef
  • Invasive aspergillosis complicated in a patient with non-small cell lung cancer harboring RET fusion during treatment with RET-TKIs: a case report and literature review
    Kaidiriye Setiwalidi, Yimeng Li, Yuyan Ma, Zhanpeng Hao, Yujia Zhao, Yuxin Zhang, Xuan Liang, Tao Tian, Zhiping Ruan, Yu Yao, Xiao Fu
    Frontiers in Oncology.2024;[Epub]     CrossRef
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