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Xue M, Liu J, Li Z, Lu M, Zhang H, Liu W, Tian H. The role of adenocarcinoma subtypes and immunohistochemistry in predicting lymph node metastasis in early invasive lung adenocarcinoma. BMC Cancer 2024; 24:139. [PMID: 38287300 PMCID: PMC10823663 DOI: 10.1186/s12885-024-11843-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/04/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Identifying lymph node metastasis areas during surgery for early invasive lung adenocarcinoma remains challenging. The aim of this study was to develop a nomogram mathematical model before the end of surgery for predicting lymph node metastasis in patients with early invasive lung adenocarcinoma. METHODS In this study, we included patients with invasive lung adenocarcinoma measuring ≤ 2 cm who underwent pulmonary resection with definite pathology at Qilu Hospital of Shandong University from January 2020 to January 2022. Preoperative biomarker results, clinical features, and computed tomography characteristics were collected. The enrolled patients were randomized into a training cohort and a validation cohort in a 7:3 ratio. The training cohort was used to construct the predictive model, while the validation cohort was used to test the model independently. Univariate and multivariate logistic regression analyses were performed to identify independent risk factors. The prediction model and nomogram were established based on the independent risk factors. Recipient operating characteristic (ROC) curves were used to assess the discrimination ability of the model. Calibration capability was assessed using the Hosmer-Lemeshow test and calibration curves. The clinical utility of the nomogram was assessed using decision curve analysis (DCA). RESULTS The overall incidence of lymph node metastasis was 13.23% (61/461). Six indicators were finally determined to be independently associated with lymph node metastasis. These six indicators were: age (P < 0.001), serum amyloid (SA) (P = 0.008); carcinoma antigen 125 (CA125) (P = 0. 042); mucus composition (P = 0.003); novel aspartic proteinase of the pepsin family A (Napsin A) (P = 0.007); and cytokeratin 5/6 (CK5/6) (P = 0.042). The area under the ROC curve (AUC) was 0.843 (95% CI: 0.779-0.908) in the training cohort and 0.838 (95% CI: 0.748-0.927) in the validation cohort. the P-value of the Hosmer-Lemeshow test was 0.0613 in the training cohort and 0.8628 in the validation cohort. the bias of the training cohort corrected C-index was 0.8444 and the bias-corrected C-index for the validation cohort was 0.8375. demonstrating that the prediction model has good discriminative power and good calibration. CONCLUSIONS The column line graphs created showed excellent discrimination and calibration to predict lymph node status in patients with ≤ 2 cm invasive lung adenocarcinoma. In addition, the predictive model has predictive potential before the end of surgery and can inform clinical decision making.
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Affiliation(s)
- Mengchao Xue
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Junjie Liu
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Zhenyi Li
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Ming Lu
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Huiying Zhang
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Wen Liu
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital, Shandong University, Lixia District, Jinan City, Shandong Province, China.
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Eguchi T, Ide S, Matsuoka S, Iijima Y, Mishima S, Hara D, Kumeda H, Miura K, Hamanaka K, Shimizu K. Predicting 1-year non-cancer-related adverse events after lung resection. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2023; 37:ivad199. [PMID: 38085252 DOI: 10.1093/icvts/ivad199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/02/2023] [Accepted: 12/11/2023] [Indexed: 12/25/2023]
Abstract
OBJECTIVES Assessing the risk for non-cancer-related outcomes following lung cancer surgery is crucial for high-risk patients. This study examined non-cancer-related adverse events within 1 year after lung resection, emphasizing the role of resected lung volume and postoperative atrial fibrillation (POAF). METHODS We conducted a retrospective analysis of 460 patients who underwent anatomical lung resection for malignant lung tumours. We assessed perioperative factors, such as the number of resected subsegments and POAF, as potential predictors of 1-year non-cancer-related adverse events. Additionally, we validated a previously published nomogram for predicting POAF. RESULTS One-year non-cancer-related adverse events occurred in 20% of patients. Multivariable analysis identified higher age, lower percentage-predicted forced expiratory volume in 1 second, greater number of resected subsegments and POAF as independent predictors of these adverse events. The incidence of POAF was 8.5%, with higher age, history of atrial fibrillation, and open thoracotomy as independent predictors. A temporal link between POAF and other severe postoperative complications was observed, as 71% of POAF cases preceded other complications. The nomogram's predicted risk for POAF was associated well with the actual incidence. CONCLUSIONS Resected lung volume and POAF are statistically significant factors associated with non-cancer-related outcomes after lung resection. Minimizing resected lung volume when oncologically and technically feasible, along with identifying patients at risk for POAF, may contribute to improved postoperative outcomes. Our results have implications for risk stratification and preoperative decision-making in lung cancer surgery.
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Affiliation(s)
- Takashi Eguchi
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shogo Ide
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shunichiro Matsuoka
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yasuhiro Iijima
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shuji Mishima
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Daisuke Hara
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hirotaka Kumeda
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kentaro Miura
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kazutoshi Hamanaka
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kimihiro Shimizu
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Dai SY, Tseng YL, Chang CC, Huang WL, Yen YT, Lai WW, Chen YY. Pulmonary function changes after uniportal video-assisted thoracoscopic anatomical lung resection. Asian J Surg 2022; 46:1571-1576. [PMID: 36210308 DOI: 10.1016/j.asjsur.2022.09.075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/09/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE The superiority of segmentectomy over lobectomy with regard to preservation of pulmonary function is controversial. This study aimed to examine changes in pulmonary function after uniportal video-assisted thoracoscopic surgery (VATS) according to the number of resected segments. METHODS We retrospectively reviewed 135 consecutive patients who underwent anatomical lung resection via uniportal VATS from April 2015 to December 2020. Pulmonary function loss was evaluated using forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1). Patients were grouped according to number of resected segments: one-segment (n = 33), two segments (n = 22), three segments (n = 40), four segments (n = 15), and five segments (n = 25). RESULTS Clinical characteristics did not significantly differ between groups, except for tumor size. Mean follow-up was 8.96 ± 3.16 months. FVC loss was significantly greater in five-segment resection (10.8%) than one-segment (0.97%, p = 0.008) and two-segment resections (2.44%, p = 0.040). FEV1 loss was significantly greater in five-segment resection (15.02%) than one-segment (3.83%, p < 0.001), two-segment (4.63%, p = 0.001), and three-segment resections (7.63%, p = 0.007). Mean FVC loss and FEV1 loss increased linearly from one-segment resection to five-segment resection. Mean loss in FVC and FEV1 per segment resected was 2.16% and 3.00%, respectively. CONCLUSIONS Anatomical lung resection of fewer segments was associated with better preservation of pulmonary function in patients undergoing uniportal VATS, and function loss was approximately 2%-3% per segment resected with linear relationship.
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Affiliation(s)
- Shuo-Ying Dai
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan; Division of Thoracic Surgery, Department of Surgery, Yuan's General Hospital, Kaohsiung, Taiwan
| | - Yau-Lin Tseng
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Chao-Chun Chang
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Wei-Li Huang
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Yi-Ting Yen
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Wu-Wei Lai
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Ying-Yuan Chen
- Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan.
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Wang K, Xue M, Qiu J, Liu L, Wang Y, Li R, Qu C, Yue W, Tian H. Genomics Analysis and Nomogram Risk Prediction of Occult Lymph Node Metastasis in Non-Predominant Micropapillary Component of Lung Adenocarcinoma Measuring ≤ 3 cm. Front Oncol 2022; 12:945997. [PMID: 35912197 PMCID: PMC9326108 DOI: 10.3389/fonc.2022.945997] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/21/2022] [Indexed: 11/22/2022] Open
Abstract
Background The efficacy of sublobar resection and selective lymph node dissection is gradually being accepted by thoracic surgeons for patients within early-stage non-small cell lung cancer (NSCLC). Nevertheless, there are still some NSCLC patients develop lymphatic metastasis at clinical T1 stage. Lung adenocarcinoma with a micropapillary (MP) component poses a higher risk of lymph node metastasis and recurrence even when the MP component is not predominant. Our study aimed to explore the genetic features and occult lymph node metastasis (OLNM) risk factors in patients with a non-predominant micropapillary component (NP-MPC) in a large of patient’s cohort with surgically resected lung adenocarcinoma. Methods Between January 2019 and December 2021, 6418 patients who underwent complete resection for primary lung adenocarcinoma at the Qilu Hospital of Shandong University. In our study, 442 patients diagnosed with lung adenocarcinoma with NP-MPC with a tumor size ≤3 cm were included. Genetic alterations were analyzed using amplification refractory mutation system-polymerase chain reaction (ARMS-PCR). Abnormal protein expression of gene mutations was validated using immunohistochemistry. A nomogram risk model based on clinicopathological parameters was developed to predict OLNM. This model was invalidated using the calibration plot and concordance index. Results In our retrospective cohort, the incidence rate of the micropapillary component was 11.17%, and OLNM was observed in 20.13% of the patients in our study. ARMS-PCR suggested that EGFR exon 19 del was the most frequent alteration in NP-MCP patients compared with other gene mutations (frequency: 21.2%, P<0.001). Patients harboring exon 19 del showed significantly higher risk of OLNM (P< 0.001). A nomogram was developed based on five risk parameters, which showed good calibration and reliable discrimination ability (C-index = 0.84) for evaluating OLNM risk. Conclusions. Intense expression of EGFR exon 19 del characterizes lung adenocarcinoma in patients with NP-MCP and it’s a potential risk factor for OLNM. We firstly established a nomogram based on age, CYFRA21-1 level, tumor size, micropapillary and solid composition, that was effective in predicting OLNM among NP-MCP of lung adenocarcinoma measuring ≤ 3 cm.
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Affiliation(s)
- Kun Wang
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Mengchao Xue
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Jianhao Qiu
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Ling Liu
- Department of Pathology, Qilu Hospital of Shandong University, Jinan, China
| | - Yueyao Wang
- Department of Pathology, Qilu Hospital of Shandong University, Jinan, China
| | - Rongyang Li
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Chenghao Qu
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Weiming Yue
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, China
- *Correspondence: Hui Tian,
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Chen L, Gu Z, Lin B, Wang W, Xu N, Liu Y, Ji C, Fang W. Pulmonary function changes after thoracoscopic lobectomy versus intentional thoracoscopic segmentectomy for early-stage non-small cell lung cancer. Transl Lung Cancer Res 2021; 10:4141-4151. [PMID: 35004245 PMCID: PMC8674599 DOI: 10.21037/tlcr-21-661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/22/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Thoracoscopic segmentectomy is increasingly used in the surgical treatment of early-stage non-small cell lung cancer. However, it remains unclear whether pulmonary function loss after thoracoscopic lung resection is in direct proportion to the number of resected segments, and thus intentional thoracoscopic segmentectomy has the function-preserving advantage over thoracoscopic lobectomy. METHODS In this prospective observational study, spirometry tests were performed preoperatively and 6 months postoperatively. The observed functional loss was compared with the expected loss estimated by the segment counting method. Resection extent index was introduced as the number of resected segments to total number of segments in the corresponding lobe. Spirometry changes after thoracoscopic lobectomy and intentional thoracoscopic segmentectomy were compared using propensity score matching. RESULTS There were 338 thoracoscopic lobectomies and 321 thoracoscopic segmentectomies. Overall, the observed pulmonary function loss after segmentectomy was significantly less than after lobectomy. But the observed functional loss was significantly greater than the expected loss after segmentectomy. And pulmonary function loss per segment resected was almost doubled after segmentectomy comparing to lobectomy. For segmentectomies with a resection extent index less than 0.5, especially single segmentectomies, pulmonary function loss was significantly less than after corresponding lobectomies. Otherwise, no significant differences in spirometry changes between lobectomies and segmentectomies were detected. CONCLUSIONS Pulmonary function loss after thoracoscopic lung resection cannot be accurately evaluated by the number of resected segments. According to the resection extent index, intentional thoracoscopic segmentectomy may help preserve more pulmonary function than thoracoscopic lobectomy only when less than half of the corresponding lobe are resected.
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Affiliation(s)
- Liang Chen
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zhitao Gu
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Boyu Lin
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Weimin Wang
- Department of Pulmonary Function, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ning Xu
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Liu
- Statistics Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Chunyu Ji
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Wentao Fang
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
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Hasegawa T, Kuroda H, Sakakura N, Sato Y, Chatani S, Murata S, Yamaura H, Nakada T, Oya Y, Inaba Y. Novel strategy to treat lung metastases: Hybrid therapy involving surgery and radiofrequency ablation. Thorac Cancer 2021; 12:2085-2092. [PMID: 34106518 PMCID: PMC8287015 DOI: 10.1111/1759-7714.14041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND This study was performed to evaluate the clinical outcomes of hybrid treatment involving surgical resection and percutaneous radiofrequency ablation for patients with multiple lung metastases. METHODS Seventeen patients (6 men, 11 women; median age, 52 years; range, 16-78 years) underwent hybrid treatment involving surgery and radiofrequency ablation to treat multiple lung metastases (median number, 4; range, 2-26) between May 2014 and February 2020. The primary lesions were colorectal carcinoma (n = 9), uterine endometrial carcinoma (n = 3), osteosarcoma (n = 2), renal cell carcinoma (n = 1), glottic carcinoma (n = 1), and fibrolamellar hepatocellular carcinoma (n = 1). Twenty-four sessions each of surgery and radiofrequency ablation were performed. Safety, disease-free survival, and overall survival were evaluated. Safety was assessed according to the Clavien-Dindo Classification. RESULTS A grade IVa adverse event of empyema developed in one patient (4%, 1/24) after surgery. A grade IIIa adverse event of pneumothorax and a grade II adverse event of lung abscess occurred in four (17%, 4/24) and one session (4%, 1/24) after radiofrequency ablation, respectively. During the median follow up of 34 months (range, 8-67 months), 10 patients (59%, 10/17) developed new metastases. The 5-year disease-free survival rate was 32%. Four or fewer lung metastases (p = 0.008) and metastases from colorectal carcinoma (p = 0.02) were factors significantly associated with longer disease-free survival. One patient (6%, 1/17) died of tumor progression 29 months after initial treatment. The 5-year overall survival rate was 88%. CONCLUSIONS The strategy of hybrid treatment involving surgery and radiofrequency ablation may offer good outcomes for patients with multiple lung metastases.
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Affiliation(s)
- Takaaki Hasegawa
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
| | - Hiroaki Kuroda
- Department of Thoracic SurgeryAichi Cancer Center HospitalNagoyaJapan
| | - Noriaki Sakakura
- Department of Thoracic SurgeryAichi Cancer Center HospitalNagoyaJapan
| | - Yozo Sato
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
| | - Shohei Chatani
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
| | - Shinichi Murata
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
| | - Hidekazu Yamaura
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
| | - Takeo Nakada
- Department of Thoracic SurgeryAichi Cancer Center HospitalNagoyaJapan
| | - Yuko Oya
- Department of Thoracic OncologyAichi Cancer Center HospitalNagoyaJapan
| | - Yoshitaka Inaba
- Department of Diagnostic and Interventional RadiologyAichi Cancer Center HospitalNagoyaJapan
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Kuroda H, Sakata S, Takahashi Y, Nakada T, Oya Y, Sugita Y, Sakakura N, Matushita H, Sakao Y. Subsegmental resection preserves regional pulmonary function: A focus on thoracoscopy. Thorac Cancer 2021; 12:1033-1040. [PMID: 33586330 PMCID: PMC8017248 DOI: 10.1111/1759-7714.13841] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 11/29/2022] Open
Abstract
Background The aim of this study was to evaluate regional postoperative preserved pulmonary function (PPPF) and three‐dimensional (3D) volumetric changes according to the number of resected subsegments and investigate the factors that most affected pre‐/post PPPF. Methods Patients who underwent thoracoscopic lobectomy (n = 73), and segmentectomy (n = 87) were eligible for inclusion in the study. They were classified according to the number of resected subsegments which ranged from 1 to 10. The percentage of pre‐/postoperative forced expiratory volume in 1 s (FEV1) was used for comparison. Furthermore, lung volumetric changes were calculated using 3D computed tomography (CT) volumetry. Results The percentage of pre‐/postoperative EFV1 between 4 and 5–7 and between 5–7 and 10 were significant (p = 0.03 and p < 0.01, respectively), but not between 1–2 to 4 (p = 0.99). The difference between volumetric changes in the left lower lobe of patients with a number of resected subsegments was significant (p < 0.01). On univariate and multivariate analyses, chronic inflammation was significant for decrease in recovery percentages. When the PPPF was compared among resected subsegments, it gradually decreased with an increase in the number of patients without a postoperative procrastination of inflammation (p < 0.01). Conclusions Segmentectomy is feasible and useful for PPPF. Even a relatively large‐volume resection procedure where 5–7 subsegments are resected can preserve pulmonary function. Chronic inflammation was statistically identified as a risk factor for postoperative preserved pulmonary function. Key points
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Affiliation(s)
- Hiroaki Kuroda
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Shozo Sakata
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yusuke Takahashi
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan.,Department of Translational Oncoimmunology, Aichi Cancer Research Institute, Nagoya, Japan
| | - Takeo Nakada
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yuko Oya
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yusuke Sugita
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Noriaki Sakakura
- Department of Thoracic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Hiroakazu Matushita
- Department of Translational Oncoimmunology, Aichi Cancer Research Institute, Nagoya, Japan
| | - Yukinori Sakao
- Department of Surgery, Division of Thoracic Surgery, The Teikyo University, Tokyo, Japan
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