Original articleStudy of the predictors for radiation pneumonitis in patient with non-small cell lung cancer received radiotherapy after pneumonectomyÉtude des prédicteurs de la pneumopathie radique chez les patients atteints de cancer bronchique non à petites cellules ayant reçu la radiothérapie après une pneumonectomie
Section snippets
Background
Radiotherapy given after surgery is an effective treatment for patients with non-small cell lung cancer (NSCLC) to improve local control, and prolong the survival under certain circumstances. It is not only applied for patients with positive surgical margins or N2 nodal involvement, but also for recurrence and second tumor in NSCLC after surgical resection [1], [2], [3]. However, patient receiving radiotherapy following previous surgery has a higher risk of developing radiation pneumonitis (RP)
Patients
From December 2008 to September 2018, patients with NSCLC received radiotherapy after pneumonectomy in Shanghai Chest Hospital were retrospectively reviewed. Clinical, dose–volume histogram (DVH) factors, and radiographic findings were collected from 92 patients who met the following criteria:
- •
pathologically confirmed non-small cell lung cancer;
- •
underwent pneumonectomy (left or right lung);
- •
received thoracic radiotherapy after pneumonectomy (PORT or radiotherapy for recurrence);
- •
having available
Result
A total of 82 patients receiving radiotherapy after pneumonectomy were included in the study. The indications of radiotherapy after pneumonectomy were positive multiple N2 lymph nodes in 24 cases (29.3%), positive surgical margin 13 cases (15.9%), both positive multiple N2 lymph nodes and surgical margin 12 cases (14.6%), and local chest recurrence 33 cases (40.2%). Patient characteristics were summarized in Table 1. Of all the 82 patients, 22(26.8%) developed grade 2 RP, 5 (6.1%) suffered
Discussion
RP is the most common complication in radiation therapy for lung cancer [4], [5], [6]. Compared to lobectomy, it could be more threatening for patient underwent pneumonectomy [12]. However, there are (to our knowledge) no published studies expressly investigating the correlation between clinical or dosimetric factors and RP in patients underwent pneumonectomy. It is clinically important to explore possible predictors to mitigate the RP incidence in this special population who had already been
Conclusion
Our study showed that V5 and V20 were independent risk factors for grade ≥2 RP in patient with NSCLC receiving radiotherapy after pneumonectomy. Grade 3 RP did not occur whenV5 < 30%, V20 < 13% and MLD < 751.2cGy, respectively. In addition, patient underwent right pneumonectomy may have a lower tolerance to radiation compared to left pneumonectomy.
Funding
This work was supported by the National Key Research and Development Program of China (2016YFC0905502); and the National Natural Science Foundation of China (No.81572950); and Shanghai Shen Kang hospital development center clinical science and technology innovation project (SHDC12017103).
Availability of data and materials
The data sets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
Ethics approval and consent to participate
The authors are accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. This retrospective study was approved by the Shanghai Chest Hospital Research Ethics Board.
Consent for publication
Not applicable.
Disclosure of interests
The authors declare that they have no competing interest.
Acknowledgements
Not applicable.
References (30)
- et al.
Postoperative radiotherapy is associated with better survival in non-small cell lung cancer with involved N2 lymph nodes: results of an analysis of the National Cancer Data Base
J Thorac Oncol
(2015) - et al.
Comparison of risk and predictors for early radiation pneumonitis in patients with locally advanced non-small cell lung cancer treated with radiotherapy with or without surgery
Lung Cancer
(2014) - et al.
Radiation pneumonitis
Clin Chest Med
(2017) - et al.
Radiation pneumonitis in lung cancer patients: a retrospective study of risk factors and the long-term prognosis
Int J Radiat Oncol Biol Phys
(2001) - et al.
Pneumonectomy for non-small cell lung cancer
Surg Oncol Clin N Am
(2016) - et al.
Prognostic implication of pulmonary function at the beginning of postoperative radiotherapy in non-small cell lung cancer
Radiother Oncol
(2014) - et al.
Predicting severe acute radiation pneumonitis in patients with non-small cell lung cancer receiving postoperative radiotherapy: Development and internal validation of a nomogram based on the clinical and dose-volume histogram parameters
Radiother Oncol
(2019) - et al.
Clinical and dosimetric factors predicting grade ≥2 radiation pneumonitis after postoperative radiotherapy for patients with non-small cell lung carcinoma
Int J Radiat Oncol Biol Phys
(2018) - et al.
124P: Acute severe radiation pneumonitis in post-operation radiation therapy among patients with lung cancer: an analysis of dose-volume parameters
J Thorac Oncol
(2016) - et al.
Clinical dose-volume histogram analysis for pneumonitis after 3D treatment for non-small cell lung cancer (NSCLC)
Int J Radiat Oncol Biol Phys
(1999)
Predicting radiation pneumonitis after chemoradiation therapy for lung cancer: an international individual patient data meta-analysis
Int J Radiat Oncol Biol Phys
Poor baseline pulmonary function may not increase the risk of radiation-induced lung toxicity
Int J Radiat Oncol Biol Phys
Impact of laterality on early and late survival after pneumonectomy
Ann Thorac Surg
Morbidity and mortality after neoadjuvant therapy for lung cancer: the risks of right pneumonectomy
Ann Thorac Surg
The role of postoperative radiotherapy for completely resected pIIIA-N2 non-small cell lung cancer patients with different clinicopathological features: a systemic review and meta-analysis
J Cancer
Cited by (0)
- 1
These authors contributed equally to this work.