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The differential prognostic impact of spread through air spaces in early-stage lung adenocarcinoma after lobectomy according to the pT descriptor. J Thorac Cardiovasc Surg 2020; 163:277-284.e1. [PMID: 33158568 DOI: 10.1016/j.jtcvs.2020.09.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 09/06/2020] [Accepted: 09/15/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVES We evaluated the differential prognostic impact of spread through air spaces (STAS) in early-stage lung adenocarcinoma after lobectomy according to the pT descriptor. METHODS The study population included 506 patients who underwent lobectomy with mediastinal lymph node dissection for pT1b, pT1c, and pT2a adenocarcinoma between 2011 and 2016. We divided the study population into 2 groups according to STAS status, ie, STAS (+) versus STAS (-), and stratified them according to the pT descriptor. A Cox proportional hazard model and inverse probability of treatment weight-adjusted Kaplan-Meier curves were used to evaluate the prognostic impact of STAS on recurrence-free survival (RFS) and its independency in each stratum. RESULTS Multivariable Cox proportional hazard regression analysis demonstrated that in pT1b and pT1c strata, STAS (+) patients had a 7.02-fold and 2.89-fold greater risk of recurrence than STAS (-) patients, respectively. However, in the pT2a stratum, STAS did not affect RFS. And the RFS of the STAS (+) pT1b/c strata was similar to that of the pT2a stratum. In the pT1b/c strata, inverse probability of treatment weighting-adjusted Kaplan-Meier curves also showed that RFS was significantly worse when STAS was present. Furthermore, the risks for locoregional and distant recurrence were both greater when STAS was present. CONCLUSIONS The presence of STAS increased the risk of recurrence independently from other poor prognostic factors in patients with pT1b/cN0M0 adenocarcinoma who underwent lobectomy, but not in pT2a patients. The presence of STAS in pT1b/cN0M0 adenocarcinoma was associated with a similar risk of recurrence to that of pT2aN0M0 adenocarcinoma.
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Li C, Jiang C, Gong J, Wu X, Luo Y, Sun G. A CT-based logistic regression model to predict spread through air space in lung adenocarcinoma. Quant Imaging Med Surg 2020; 10:1984-1993. [PMID: 33014730 DOI: 10.21037/qims-20-724] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Spread through air space (STAS) is a novel invasive pattern of lung adenocarcinoma and is also a risk factor for recurrence and worse prognosis of lung adenocarcinoma. This study aimed to develop and validate a computed tomography (CT)-based logistic regression model to predict STAS in lung adenocarcinoma. Methods This retrospective study was approved by the institutional review board of two centers and included 578 patients (462 from center I and 116 from center II) with pathologically confirmed lung adenocarcinoma. STAS was identified from 90 center I patients (19.5%) and 28 center II patients (24.1%) from. The maximum diameter, nodule area, and area of solid components in part-solid nodules were measured. Twenty-one semantic characteristics were assessed. Univariate analysis was used to select CT characteristics, which were associated with STAS in the patient cohort of center I. Multivariable logistic regression was used to develop a CT characteristics-based model on those variables with statistical significance. The model was validated in the validation cohort and then tested in the external test cohort (patients from center II). The diagnostic performance of the model was measured by area under the curve (AUC) of receiver operating characteristic (ROC). Results At univariate analysis, age and 11 CT characteristics, including the maximum diameter of the tumor, the maximum area of the tumor, the area and ratio of the solid component, nodule type, pleural thickening, pleural retraction, mediastinal lymph node enlargement, vascular cluster sign, and lobulation, specula were found to be significantly associated with STAS. The optimal logistic regression model included age, maximum diameter and ratio of solid component with odds ratio (OR) value of 0.967 (95% CI: 0.944-0.988), 1.027 (95% CI: 1.008-1.046) and 5.14 (95% CI: 2.180-13.321), respectively. This model achieved an AUC of 0.801 (95% CI: 0.709-0.892) and 0.692 (95% CI: 0.518-0.866) in the validation cohort and the external test cohort, respectively. The difference was not statistically significant (P=0.280). Conclusions CT-based logistic regression machine learning model could preoperatively predict STAS in lung adenocarcinoma with excellent diagnosis performance, which could be supplementary to routine CT interpretation.
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Affiliation(s)
- Chuanjun Li
- Department of Radiology, Pingshan District People's Hospital of Shenzhen, Shenzhen, China
| | - Changsi Jiang
- Department of Radiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Jingshan Gong
- Department of Radiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Xiaotao Wu
- Department of Radiology, Pingshan District People's Hospital of Shenzhen, Shenzhen, China
| | - Yan Luo
- Department of Radiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Guopin Sun
- Department of Radiology, Pingshan District People's Hospital of Shenzhen, Shenzhen, China
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Yin Q, Wang H, Cui H, Wang W, Yang G, Qie P, Xun X, Han S, Liu H. Meta-analysis of association between CT-based features and tumor spread through air spaces in lung adenocarcinoma. J Cardiothorac Surg 2020; 15:243. [PMID: 32912289 PMCID: PMC7488257 DOI: 10.1186/s13019-020-01287-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 09/01/2020] [Indexed: 11/24/2022] Open
Abstract
Objective Spread through air space (STAS) is a novel invasive pattern of lung adenocarcinoma and is also a risk factor for recurrence and worse prognosis of lung adenocarcinoma after sublobar resection. The aims of this study are to evaluate the association between computed tomography (CT)-based features and STAS for preoperative prediction of STAS in lung adenocarcinoma, eventually, which could help us choose appropriate surgical type. Methods Systematic research was conducted to search for studies published before September 1, 2019. The association between CT-based features of radiological tumor size>2 cm、pure solid nodule、 part-solid nodule or Percentage of solid component (PSC)>50% and STAS was evaluated. According to rigorous inclusion and exclusion criteria. Eight studies including 2385 patients published between 2015 and 2018 were finally enrolled in our meta-analysis. Results Our results clearly depicted that there is no significant relationship between radiological tumor size>2 cm and STAS with the combined OR of 1.47(95% CI:0.86–2.51). Meta-analysis of 3 studies showed that pure solid nodule in CT image were more likely to spread through air spaces with pooled OR of 3.10(95%CI2.17–4.43). Meta-analysis of 5 studies revealed the part-solid nodule in CT image may be more likely to appear STAS in adenocarcinoma (ADC) (combined OR:3.10,95%CI:2.17–4.43). PSC>50% in CT image was a significant independent predictor in the diagnosis of STAS in ADC from our meta-analysis with combined OR of 2.95(95%CI:1.88–4.63). Conclusion In conclusion, The CT-based features of pure solid nodule、part-solid nodule、PSC>50% are promising imaging biomarkers for predicting STAS in ADC and may substantially influence the choice of surgical type. In future, more studies with well-designed and large-scale are needed to confirm the conclusion.
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Affiliation(s)
- Qifan Yin
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Huien Wang
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Hongshang Cui
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Wenhao Wang
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Guang Yang
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Peng Qie
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Xuejiao Xun
- Department of Pharmacy, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Shaohui Han
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China
| | - Huining Liu
- Department of Thoracic Surgery, Hebei Provincal General Hospital, 348, West He-Ping Road, Shijiazhuang, 050051, Hebei Province, People's Republic of China.
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Zeng Q, Wang B, Li J, Zhao J, Mao Y, Gao Y, Xue Q, Gao S, Sun N, He J. Solid Nodule Appearance as a Predictor of Tumor Spread Through Air Spaces in Patients with Lung Adenocarcinoma: A Propensity Score Matching Study. Cancer Manag Res 2020; 12:8197-8207. [PMID: 32982416 PMCID: PMC7490081 DOI: 10.2147/cmar.s266750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/13/2020] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Spread through air spaces (STAS) has been reported to be an invasive histological pattern with poor prognosis in lung cancer; however, little is known about its intrinsic risk factors. This work analyzed the correlation between pathological and radiological features and STAS in resected lung adenocarcinomas. PATIENTS AND METHODS We retrospectively reviewed 1821 consecutive surgically treated patients with histologically diagnosed lung adenocarcinoma (174 positive for STAS and 1647 negative for STAS) from December 2017 to November 2018 at our institution. Propensity score matching identified 170 well-balanced pairs of patients. The correlations between pathological and radiological features and the presence of STAS were analyzed. RESULTS Before propensity matching, the incidence rate of STAS was 9.6% in all patients. In matched cohorts, multivariate analysis showed that the presence of STAS was significantly correlated with pure solid nodules (SNs) (p = 0.001) and solid/micropapillary patterns (SMPs) (p = 0.002). The odds ratio for STAS in SN-positive and SMP-positive adenocarcinoma against that in SN-negative and SMP-negative adenocarcinoma was 10.922 (95% confidence interval, 5.826-20.475; p < 0.001). Tumor differentiation, visceral pleural invasion (VPI), lymphovascular invasion (LVI), invasive adenocarcinoma, and non-lepidic subtype were significantly associated with STAS in the univariate analysis (p < 0.05); however, the differences failed to reach a significant level in the multivariate analysis. CONCLUSION We found that STAS was significantly correlated with several invasive clinicopathological patterns. The presence of SNs and SMPs were revealed as independent predictors for STAS, which could offer clinicians clues to identify STAS-positive adenocarcinoma.
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Affiliation(s)
- Qingpeng Zeng
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Bingzhi Wang
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Jiagen Li
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Jun Zhao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Yousheng Mao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Yushun Gao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Qi Xue
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Shugeng Gao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Nan Sun
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Jie He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
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Kimura T, Nakamura H, Omura A, Ike A, Hiroshima T, Maniwa T, Honma K, Higashiyama M, Okami J. Novel imprint cytological classification is correlated with tumor spread through air spaces in lung adenocarcinoma. Lung Cancer 2020; 148:62-68. [PMID: 32818696 DOI: 10.1016/j.lungcan.2020.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/21/2020] [Accepted: 08/04/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Spread through air spaces (STAS) is a risk factor for local recurrence after sublobar resection in lung cancer patients. We recently proposed the novel Nakayama-Higashiyama imprint cytological classification (N-H classification) based on small-sized lung adenocarcinoma surgical specimens, which correlated with histological patterns and nodal involvement. This study aimed to evaluate the correlation between STAS and the N-H classification and to validate the N-H classification as an intraoperative predictor of the presence of STAS. MATERIALS AND METHODS We retrospectively analyzed 164 intraoperative imprint cytologies and their paired histologic specimens from patients undergoing surgical resection for lung adenocarcinoma in our institute in 2017-2019. Using the NH classification, imprint cytological findings were classified into 5 groups (Groups I to V) based on cell cluster shape, cell and nucleus size, and the existence of necrosis. We examined the characteristics of imprint cytology and STAS in the resected tissues and analyzed the relationship between them. RESULTS Tumor STAS was observed in 29 (17.7 %) cases. The presence of STAS was significantly associated with the NH classification (P < 0.0001). STAS was present in 6 of 57 cases (10.5 %) in NH classification Group II, 11 of 42 cases (26.2 %) in Group III, and 12 of 28 cases (42.9 %) in Group IV/V; STAS was not observed in any case in Group I. Logistic regression analysis revealed that tumors with a ground glass opacity rate of <50 % on computed tomography (P = 0.00867) and Groups III-V of the NH classification (P = 0.00201) were significant independent predictors for STAS. CONCLUSION Intraoperative imprint cytology with the N-H classification for lung adenocarcinoma is well correlated with the STAS status of the tumor and might have applications as an intraoperative predictive marker of STAS. This classification may be useful for intraoperative detection of STAS and in the decision-making process for the surgical procedure.
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Affiliation(s)
- Toru Kimura
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan.
| | - Harumi Nakamura
- Laboratory of Genomic Pathology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Akiisa Omura
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Akihiro Ike
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Takashi Hiroshima
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Tomohiro Maniwa
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Keiichiro Honma
- Department of Pathology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
| | - Masahiko Higashiyama
- Department of General Thoracic Surgery, Higashiosaka City Medical Center, 3-4-5, Nishi-Iwata, Higashi-Osaka, 578-8588, Japan
| | - Jiro Okami
- Department of General Thoracic Surgery, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
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Shih AR, Mino-Kenudson M. Updates on spread through air spaces (STAS) in lung cancer. Histopathology 2020; 77:173-180. [PMID: 31943337 DOI: 10.1111/his.14062] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/08/2020] [Indexed: 12/20/2022]
Abstract
Air space invasion of tumours, particularly spread through air spaces (STAS), is a relatively recent concept that has been identified as a novel mechanism of invasion. It has predominantly been described in lung adenocarcinoma, although it may be seen in other primary lung malignancies as well. STAS in lung cancer has been reported to have numerous associations with poor survival. The objective of this article was to review the concept of air space invasion, update findings regarding its clinical impact, and discuss controversies in the field. With this aim, we performed a PubMed search of the English-language literature. STAS has been introduced as a novel mechanism of invasion that is important for pathologists to recognise. There is a compelling body of evidence associating the presence of STAS with lower survival and suggesting that STAS is an independent prognostic factor, regardless of the stage of tumour. The standard of care for lung adenocarcinomas with STAS irrespective of size of tumour and nodal metastasis may be lobectomy rather than sublobar resection, owing to the risk of locoregional recurrence. Emerging data suggest that more work should be performed to improve consensus on and identification of STAS, including at frozen section.
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Affiliation(s)
- Angela R Shih
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
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Zombori T, Sejben A, Tiszlavicz L, Cserni G, Pálföldi R, Csada E, Furák J. Architectural Grade Combined With Spread Through Air Spaces (STAS) Predicts Recurrence and is Suitable for Stratifying Patients Who Might Be Eligible for Lung Sparing Surgery for Stage I Adenocarcinomas. Pathol Oncol Res 2020; 26:2451-2458. [PMID: 32564261 PMCID: PMC7471099 DOI: 10.1007/s12253-020-00855-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 06/11/2020] [Indexed: 12/25/2022]
Abstract
The spread through air spaces (STAS) has a main role in local recurrence of stage I lung adenocarcinomas (LAs), therefore its presence might question sublobar resection as a therapeutic option. The aim of our study was to evaluate the distribution of STAS in stage I LAs, to stratify patients according to local recurrence and to identify a group of patients who might be suitable for sublobar surgery. Patients resected with LA were included. The presence of STAS was recorded on hematoxylin eosin stained slides and clinicopathological data were obtained from medical charts. Overall survival (OS) and disease-free survival (DFS) were registered. Statistical methods included Kruskal-Wallis tests, Kaplan-Meier analyses, log-rank tests and Cox-regressions. 292 patients were included. STAS was identified in 38.7% and 95.7% of micropapillary carcinomas showed STAS. Significant correlation was found between STAS and high-grade patterns. Significant differences were found between OS and DFS estimates of STAS0 and STAS1 cases (5-y-OS: 80.0% vs. 68.4%; 5-y-DFS: 71.1% vs. 57.1%). The presence of STAS was associated with unfavorable prognosis in low and intermediate architectural grades, but not in high-grade. Multivariate analysis revealed that architectural grade (HR(OS):2.09; HR(DFS):1.52) and STAS (HR(OS):1.51; HR(DFS):1.48) were independent prognostic markers in stage I LA. Architectural grade combined with STAS was superior to other prognostic grades. The combination of architectural grade and STAS proved to be a prognostic factor that is superior to previously introduced grading systems. Patients having low and intermediate grade LAs without STAS might be eligible for sublobar resection.
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Affiliation(s)
- Tamás Zombori
- Department of Pathology, Faculty of Medicine, University of Szeged, Állomás u. 1., H6725, Szeged, Hungary.
| | - Anita Sejben
- Department of Pathology, Faculty of Medicine, University of Szeged, Állomás u. 1., H6725, Szeged, Hungary
| | - László Tiszlavicz
- Department of Pathology, Faculty of Medicine, University of Szeged, Állomás u. 1., H6725, Szeged, Hungary
| | - Gábor Cserni
- Department of Pathology, Faculty of Medicine, University of Szeged, Állomás u. 1., H6725, Szeged, Hungary.,Department of Pathology, Bács-Kiskun County Teaching Hospital, Nyíri út 38, Kecskemét, H6000, Hungary
| | - Regina Pálföldi
- Csongrád County Hospital of Chest Diseases, Alkotmány u. 36. , Deszk, H6772, Hungary
| | - Edit Csada
- Csongrád County Hospital of Chest Diseases, Alkotmány u. 36. , Deszk, H6772, Hungary
| | - József Furák
- Department of Surgery, University of Szeged, Semmelweis u. 8., Szeged, H6720, Hungary
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Mino-Kenudson M. Significance of tumor spread through air spaces (STAS) in lung cancer from the pathologist perspective. Transl Lung Cancer Res 2020; 9:847-859. [PMID: 32676351 PMCID: PMC7354155 DOI: 10.21037/tlcr.2020.01.06] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Airspace invasion in lung cancer has been known over the last 30 years, but it was only recently that WHO 2015 formally recognized it as a mechanism of invasion with the terminology of tumor spread through air spaces (STAS). Multiple studies have shown the association of STAS with lower survival and suggest that STAS is an independent prognostic factor across lung adenocarcinoma of all stages and in other histologic subtypes of lung cancer as well. Consequently, STAS is designated as an exclusion criterion of adenocarcinoma in situ and minimally invasive adenocarcinoma; thus, the presence of STAS impacts the diagnosis and staging of lung adenocarcinoma. Further, wedge resection and segmentectomy have been increasingly applied for small node negative tumors and the presence of STAS in those specimens may indicate the requirement of completion lobectomy. Given these significant clinical implications, we, pathologists, need to recognize and appropriately report STAS (possibly including at the time of intraoperative consultation). However, emerging data suggests that more work should be done to improve consensus and identification of STAS, including at frozen section. In this review, the evolution of our understanding of airspace invasion over the past decade, the clinical significance of STAS, and controversies and practical issues associated with the diagnosis of STAS are discussed.
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Affiliation(s)
- Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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59
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Toki MI, Harrington K, Syrigos KN. The role of spread through air spaces (STAS) in lung adenocarcinoma prognosis and therapeutic decision making. Lung Cancer 2020; 146:127-133. [PMID: 32534331 DOI: 10.1016/j.lungcan.2020.04.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 12/18/2022]
Abstract
Spread through air spaces (STAS) was included as a novel pattern of invasion in lung adenocarcinoma by the World Health Organization in 2015. Since then, multiple studies have investigated the association of STAS with clinicopathological and molecular features and its implication in the prognosis of early stage lung cancer patients undergoing different surgery types. The aim of this comprehensive review is to present current data on the role of STAS and its perspective in lung adenocarcinoma management.
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Affiliation(s)
- Maria I Toki
- Yale University School of Medicine, Department of Pathology, New Haven, United States; National and Kapodistrian University of Athens, Greece.
| | - Kevin Harrington
- The Institute of Cancer Research/The Royal Marsden, London, United Kingdom
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Shiono S, Endo M, Suzuki K, Yanagawa N. Spread through air spaces affects survival and recurrence of patients with clinical stage IA non-small cell lung cancer after wedge resection. J Thorac Dis 2020; 12:2247-2260. [PMID: 32642130 PMCID: PMC7330349 DOI: 10.21037/jtd.2020.04.47] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background Spread through air spaces (STAS) is reportedly a significant risk factor for recurrence and a prognostic factor in patients with non-small cell lung cancer (NSCLC), especially after sublobar resection. Because wedge resection (WR) is associated with insufficient margins, we hypothesized that STAS has a greater prognostic impact in patients who undergo WR compared with segmentectomy. We aimed to clarify the value of STAS as a prognostic factor in patients with NSCLC after WR. Methods We evaluated 217 patients with clinical stage IA NSCLC who underwent sublobar resection. The prognostic impact of STAS in these patients was compared between the WR (n=100) and segmentectomy (n=117) cases. Results STAS was present in 15.7% of the 217 patients. STAS was a significant prognostic factor for overall survival in univariate (P<0.001) and multivariate (P=0.003) analyses for the WR cases, but not the segmentectomy cases (P=0.399). STAS was also a significant prognostic factor for freedom from recurrence in univariate (P=0.010) and multivariate (P=0.024) analyses for the WR cases, but was only marginally significant for the segmentectomy cases (P=0.050, univariate analysis). The solid tumor size on chest computed tomography was significantly related to STAS. A cut-off solid tumor size of 1.7 cm for predicting the presence of STAS was determined by receiver operating characteristic analysis. Conclusions STAS was a significant prognostic factor for patients with clinical stage IA NSCLC who underwent WR, but not those who underwent segmentectomy.
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Affiliation(s)
- Satoshi Shiono
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Makoto Endo
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Katsuyuki Suzuki
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Naoki Yanagawa
- Department of Pathology, Yamagata Prefectural Central Hospital, Yamagata, Japan
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Jia M, Yu S, Gao H, Sun PL. Spread Through Air Spaces (STAS) in Lung Cancer: A Multiple-Perspective and Update Review. Cancer Manag Res 2020; 12:2743-2752. [PMID: 32425593 PMCID: PMC7186879 DOI: 10.2147/cmar.s249790] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/09/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Spread through air spaces (STAS) is a spreading phenomenon of lung cancers, which is defined as tumor cells within air spaces in the lung parenchyma beyond the edge of the main tumor. To date, several articles have reviewed the studies concerning the significance of STAS; however, most articles focused on the prognosis without summarizing the significance of STAS on other aspects. In this review, we comprehensively summarized the current literature related to STAS, so as to explore the clinical significance of STAS from multiple perspectives. MAIN BODY This section provided a comprehensive overview of the significance of STAS from multiple perspectives and summarized current controversies and challenges in the diagnosis and clinical application. CONCLUSION STAS is a conspicuous spreading phenomenon of lung cancers indicating worse prognosis; nevertheless, the treatment strategy for patients with STAS remains to be discussed. Further studies are needed to elaborate whether a STAS-positive patient who underwent limited resection needs a second operation or postoperative adjuvant treatment. Meanwhile, the internal mechanism of STAS formation is largely undiscovered. Whether the capability of detachment-migration-reattachment in STAS tumor cells is achieved at the time of primary tumorigenesis or in the progress of tumor development needs to be studied, and the related signal pathways or genetic alterations need to be explored. With this information, it may be possible to improve the prognosis of patients with STAS-positive lung cancers.
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Affiliation(s)
- Meng Jia
- Department of Pathology, The Second Hospital of Jilin University, Changchun, Jilin, People’s Republic of China
| | - Shili Yu
- Department of Pathology, The Second Hospital of Jilin University, Changchun, Jilin, People’s Republic of China
| | - Hongwen Gao
- Department of Pathology, The Second Hospital of Jilin University, Changchun, Jilin, People’s Republic of China
| | - Ping-Li Sun
- Department of Pathology, The Second Hospital of Jilin University, Changchun, Jilin, People’s Republic of China
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Yagi Y, Aly RG, Tabata K, Barlas A, Rekhtman N, Eguchi T, Montecalvo J, Hameed M, Manova-Todorova K, Adusumilli PS, Travis WD. Three-Dimensional Histologic, Immunohistochemical, and Multiplex Immunofluorescence Analyses of Dynamic Vessel Co-Option of Spread Through Air Spaces in Lung Adenocarcinoma. J Thorac Oncol 2020; 15:589-600. [PMID: 31887430 PMCID: PMC7288352 DOI: 10.1016/j.jtho.2019.12.112] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/09/2019] [Accepted: 12/13/2019] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Spread through air spaces (STAS) is a method of invasion in lung adenocarcinoma and is associated with tumor recurrence and poor survival. The spatial orientation of STAS cells in the lung alveolar parenchyma is not known. The aim of this study was to use high-resolution and high-quality three-dimensional (3D) reconstruction of images from immunohistochemical (IHC) and multiplex immunofluorescence (IF) experiments to understand the spatial architecture of tumor cell clusters by STAS in the lung parenchyma. METHODS Four lung adenocarcinomas, three micropapillary-predominant and one solid predominant adenocarcinoma subtypes, were investigated. A 3D reconstruction image was created from formalin-fixed, paraffin-embedded blocks. A total of 350 serial sections were obtained and subjected to hematoxylin and eosin (100 slides), IHC (200 slides), and multiplex IF staining (50 slides) with the following antibodies: cluster of differentiation 31, collagen type IV, thyroid transcription factor-1, and E-cadherin. Whole slide images were reconstructed into 3D images for evaluation. RESULTS Serial 3D image analysis by hematoxylin and eosin, IHC, and IF staining revealed that the micropapillary clusters and solid nests of STAS are focally attached to the alveolar walls, away from the main tumor. CONCLUSIONS Our 3D reconstructions found that STAS tumor cells can attach to the alveolar walls rather than appearing free floating, as seen on the two-dimensional sections. This suggests that the tumor cells detach from the main tumor, migrate through air spaces, and reattach to the alveolar walls through vessel co-option, allowing them to survive and grow. This may explain the higher recurrence rate and worse survival of patients with STAS-positive tumors who undergo limited resection than those who undergo lobectomy.
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Affiliation(s)
- Yukako Yagi
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Rania G Aly
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pathology, Alexandria University, Alexandria, Egypt
| | - Kazuhiro Tabata
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pathology, Nagasaki University Hospital, Nagasaki, Japan
| | - Afsar Barlas
- Molecular Cytology, Core Facility, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Natasha Rekhtman
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Takashi Eguchi
- Thoracic Surgery Service, Memorial Sloan Kettering Cancer Center, New York, New York; Division of Thoracic Surgery, Department of Surgery, Shinshu University, Matsumoto, Japan
| | - Joeseph Montecalvo
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pathology, Henry Ford Hospital System, Detroit, Michigan
| | - Meera Hameed
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Katia Manova-Todorova
- Molecular Cytology, Core Facility, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Prasad S Adusumilli
- Thoracic Surgery Service, Memorial Sloan Kettering Cancer Center, New York, New York; Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, New York, New York
| | - William D Travis
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
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CT-based radiomics and machine learning to predict spread through air space in lung adenocarcinoma. Eur Radiol 2020; 30:4050-4057. [PMID: 32112116 DOI: 10.1007/s00330-020-06694-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/02/2020] [Accepted: 01/30/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Spread through air space (STAS) is a novel invasive pattern of lung adenocarcinoma and is also a risk factor for recurrence and worse prognosis of lung adenocarcinoma. The aims of this study are to develop and validate a computed tomography (CT)‑based radiomics model for preoperative prediction of STAS in lung adenocarcinoma. METHODS AND MATERIALS This retrospective study was approved by an institutional review board and included 462 (mean age, 58.06 years) patients with pathologically confirmed lung adenocarcinoma. STAS was identified in 90 patients (19.5%). Two experienced radiologists segmented and extracted radiomics features on preoperative thin-slice CT images with radiomics extension independently. Intraclass correlation coefficients (ICC) and Pearson's correlation were used to rule out those low reliable (ICC < 0.75) and redundant (r > 0.9) features. Univariate logistic regression was applied to select radiomics features which were associated with STAS. A radiomics-based machine learning predictive model using a random forest (RF) was developed and calibrated with fivefold cross-validation. The diagnostic performance of the model was measured by the area under the curve (AUC) of receiver operating characteristic (ROC). RESULTS With univariate analysis, 12 radiomics features and age were found to be associated with STAS significantly. The RF model achieved an AUC of 0.754 (a sensitivity of 0.880 and a specificity of 0.588) for predicting STAS. CONCLUSION CT-based radiomics model can preoperatively predict STAS in lung adenocarcinoma with good diagnosis performance. KEY POINTS • CT-based radiomics and machine learning model can predict spread through air space (STAS) in lung adenocarcinoma with high accuracy. • The random forest (RF) model achieved an AUC of 0.754 (a sensitivity of 0.880 and a specificity of 0.588) for predicting STAS.
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Stepwise flowchart for decision making on sublobar resection through the estimation of spread through air space in early stage lung cancer 1. Lung Cancer 2020; 142:28-33. [PMID: 32065918 DOI: 10.1016/j.lungcan.2020.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/19/2020] [Accepted: 02/02/2020] [Indexed: 11/21/2022]
Abstract
OBJECTIVES The sensitivity for tumor spread through air space (STAS), an independent risk factor for locoregional recurrence after sublobar resection for lung cancer, has been relatively low in frozen sections. We aimed to determine predictors with high negative predictive value for the presence of STAS and to provide the flowchart in combination with these predictors for the decision-making for sublobar resection. MATERIALS AND METHODS Between July 2015 and December 2017, 387 patients who underwent surgery for non-small cell lung cancer (NSCLC) with pathologic findings of the total masses measuring ≤ 2 cm were enrolled. The lesions were divided into two groups according to presence of STAS. We compared the preoperative characteristics, operative data, and developed a flowchart for STAS prediction using receiver operator characteristic curve analysis and multivariable logistic regression. RESULTS The STAS-positive group (N = 111) had a significantly higher preoperative tumor size (1.70 [1.5] vs 1.50 [0.69], p < 0.001) and standardized uptake value tumor-to-liver (SUV T/L) ratio (1.40 [1.60] vs 0.60 [1.10], p < 0.001) and a significantly lower two-dimensional ground-glass opacity (GGO) percentage (35.86 [61.00] vs 78.14 [39.00], p < 0.001). Meanwhile, the STAS-negative group (N = 286) had higher lepidic predominance (41.6% vs. 1.8%, p < 0.001). We developed a flowchart for predicting STAS in combination with two-dimensional GGO percentage on computed tomography (CT), SUV T/L ratio on positron-emission CT, and lepidic predominant pattern. The sensitivity, specificity, and negative predictive value for STAS positivity were 79.3%, 68.5%, and 89.5%, respectively. CONCLUSIONS The stepwise flowchart using two-dimensional GGO percentage on CT, maximum SUV, and lepidic predominance might be helpful in selecting patients with early NSCLC for sublobar resection.
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Terada Y, Takahashi T, Morita S, Kashiwabara K, Nagayama K, Nitadori JI, Anraku M, Sato M, Shinozaki-Ushiku A, Nakajima J. Spread through air spaces is an independent predictor of recurrence in stage III (N2) lung adenocarcinoma. Interact Cardiovasc Thorac Surg 2020; 29:442-448. [PMID: 31106332 DOI: 10.1093/icvts/ivz116] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Spread through air space (STAS) is recognized as a pattern of invasion in lung adenocarcinoma and has been reported to be a predictor of recurrence and survival in patients with early-stage lung adenocarcinoma. However, this parameter has not been studied well in stage III (N2) lung adenocarcinoma. In this study, we evaluated the association between STAS invasion patterns and recurrence and survival in stage III (N2) lung adenocarcinoma. METHODS We retrospectively reviewed data from 76 patients at University of Tokyo with stage III (N2) lung adenocarcinoma who underwent surgery from August 1998 to December 2013. Statistical analysis was performed to determine the impact of STAS invasion clinicopathological features and clarify the relationship between this pattern of invasion and survival. RESULTS Tumour STAS was observed in 46 of 76 patients (60.5%) and was significantly associated with the presence of lymphatic invasion (P < 0.001), papillary components (P < 0.001) and micropapillary components (P < 0.001). STAS was also significantly associated with recurrence (5-year recurrence-free probability: 19.0% vs 46.1%, P < 0.05). Univariate analyses showed that STAS was a significant risk factor for recurrence (hazard ratio 1.94, 95% confidence interval 1.07-3.51; P = 0.029). CONCLUSIONS The presence of STAS invasion pattern is a significant risk factor for recurrence in stage III (N2) lung adenocarcinoma.
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Affiliation(s)
- Yuriko Terada
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Surgery, Washington University School of Medicine, Saint Louis, MO, USA
| | - Tsuyoshi Takahashi
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Surgery, Washington University School of Medicine, Saint Louis, MO, USA
| | - Shigeki Morita
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kosuke Kashiwabara
- Department of Biostatistics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Kazuhiro Nagayama
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Jun-Ichi Nitadori
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masaki Anraku
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masaaki Sato
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Aya Shinozaki-Ushiku
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Jun Nakajima
- Department of Thoracic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Vaghjiani RG, Takahashi Y, Eguchi T, Lu S, Kameda K, Tano Z, Dozier J, Tan KS, Jones DR, Travis WD, Adusumilli PS. Tumor Spread Through Air Spaces Is a Predictor of Occult Lymph Node Metastasis in Clinical Stage IA Lung Adenocarcinoma. J Thorac Oncol 2020; 15:792-802. [PMID: 32007599 DOI: 10.1016/j.jtho.2020.01.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/02/2020] [Accepted: 01/14/2020] [Indexed: 01/14/2023]
Abstract
INTRODUCTION In patients with stage IA lung adenocarcinoma (ADC), sublobar resection and tumor spread through air spaces (STAS) are associated with high rates of locoregional recurrence, half of which occur within the regional lymph nodes (LNs). Our objectives were to investigate the association between occult LN metastasis (ONM) and STAS and to assess their prognostic value in patients with clinical stage IA lung ADC. METHODS The association between STAS and ONM was analyzed in patients who underwent lobectomy and LN dissection for clinical stage IA lung ADC (n = 809). Multivariable logistic regression analysis was carried out to identify predictors of ONM. Site-specific recurrence by surgical procedure was investigated in patients with pathologic node-negative disease (n = 1055) using a competing risk approach. RESULTS ONM was identified in 129 patients (16%)-one-third of ONMs were located only in intrapulmonary nodes. STAS was more common in patients with ONM than in those without ONM (67% versus 39%; p < 0.001) and in patients with multiple ONMs than in those with a single ONM (86%-89% versus 60%-67%). STAS was a significant predictor of ONM (p = 0.004) on multivariable analysis, independent of tumor size, maximum standardized uptake value, and lymphovascular invasion. In patients with STAS-positive ADC (high ONM risk), the risk of recurrence in the treated lobe and regional LNs increased as the extent of resection decreased (recurrence risk: lobectomy < segmentectomy < wedge resection). In patients with STAS-negative ADC, the risk of locoregional recurrence did not differ by procedure type. CONCLUSIONS Presence of STAS predicts ONM in patients with clinical stage IA lung ADC and can help stratify risk of recurrence by extent and type of resection.
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Affiliation(s)
- Raj G Vaghjiani
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Yusuke Takahashi
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of General Thoracic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Eguchi
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Division of Thoracic Surgery, Department of Surgery, Shinshu University, Matsumoto, Japan
| | - Shaohua Lu
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Koji Kameda
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Thoracic Surgery, National Defense Medical College, Tokorozawa, Japan
| | - Zachary Tano
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Jordan Dozier
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kay See Tan
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - David R Jones
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - William D Travis
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Prasad S Adusumilli
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, New York, New York.
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Uruga H, Mino-Kenudson M. Lung neuroendocrine tumors: a new addition to the evolving list of spread through air spaces. Transl Lung Cancer Res 2019; 8:S443-S446. [PMID: 32038934 PMCID: PMC6987357 DOI: 10.21037/tlcr.2019.09.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 08/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Hironori Uruga
- Department of Respiratory Medicine, Respiratory Center, Toranomon Hospital, Tokyo, Japan
- Department of Respiratory Medicine, Toranomon Hospital Kajigaya, Kawasaki, Japan
| | - Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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Kozuma Y, Toyokawa G, Yamada Y, Shoji F, Yamazaki K, Oda Y, Takeo S. Spread through air spaces in lung neuroendocrine tumor. Transl Lung Cancer Res 2019; 8:S439-S442. [PMID: 32038933 DOI: 10.21037/tlcr.2019.10.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuka Kozuma
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Gouji Toyokawa
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Yuichi Yamada
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Fumihiro Shoji
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Koji Yamazaki
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Sadanori Takeo
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
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Cao D, Sha J, Cui R, Han S. Advances In Research Of Spreading Through Air Spaces And The Effects On The Prognosis Of Lung Cancer. Cancer Manag Res 2019; 11:9725-9732. [PMID: 31814767 PMCID: PMC6863114 DOI: 10.2147/cmar.s232187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/02/2019] [Indexed: 11/23/2022] Open
Abstract
The concept of spread through air spaces (STAS) has been described as a new form of invasion in the lung in the 2015 WHO classification of Lung Tumors, namely invasion through alveolar spaces. STAS is a prognostic factor independent of growth pattern and tumor stage, and it is also an independent risk factor for unfavorable prognosis of stage I lung adenocarcinoma (ADC) and stage I lung squamous cell carcinoma (SCC). The pathological characteristics are different between ADC and SCC. STAS is not reported as routine, so setting a unified pathological reading standard, and hunting for STAS as a regular reading process is urgently advocated. We write this review to investigate the research progress of STAS and its effects on the prognosis of lung cancer.
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Affiliation(s)
- Dandan Cao
- Department of Pulmonary Medicine, Zhongda Hospital, School of Medicine, South-East University, Nanjing, Jiangsu, People's Republic of China.,Medicine Department of Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Jun Sha
- Department of Pulmonary Medicine, Zhongda Hospital, School of Medicine, South-East University, Nanjing, Jiangsu, People's Republic of China.,Medicine Department of Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Rui Cui
- Department of Pulmonary Medicine, Zhongda Hospital, School of Medicine, South-East University, Nanjing, Jiangsu, People's Republic of China.,Medicine Department of Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Shuhua Han
- Department of Pulmonary Medicine, Zhongda Hospital, School of Medicine, South-East University, Nanjing, Jiangsu, People's Republic of China
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Pelosi G, Nesa F, Taietti D, Servillo SP, Papanikolaou N, Zompatori M, Meroni A, Harari S, Incarbone M. Spread of hyperplastic pulmonary neuroendocrine cells into air spaces (S.H.I.P.M.E.N.T.S): A proof for artifact. Lung Cancer 2019; 137:43-47. [DOI: 10.1016/j.lungcan.2019.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 08/31/2019] [Accepted: 09/11/2019] [Indexed: 11/15/2022]
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Ghimessy AK, Gellert A, Schlegl E, Hegedus B, Raso E, Barbai T, Timar J, Ostoros G, Megyesfalvi Z, Gieszer B, Moldvay J, Renyi-Vamos F, Lohinai Z, Hoda MA, Klikovits T, Klepetko W, Laszlo V, Dome B. KRAS Mutations Predict Response and Outcome in Advanced Lung Adenocarcinoma Patients Receiving First-Line Bevacizumab and Platinum-Based Chemotherapy. Cancers (Basel) 2019; 11:E1514. [PMID: 31600989 PMCID: PMC6827133 DOI: 10.3390/cancers11101514] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/23/2019] [Accepted: 10/03/2019] [Indexed: 01/09/2023] Open
Abstract
Bevacizumab, combined with platinum-based chemotherapy, has been widely used in the treatment of advanced-stage lung adenocarcinoma (LADC). Although KRAS (V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog) mutation is the most common genetic alteration in human LADC and its role in promoting angiogenesis has been well established, its prognostic and predictive role in the above setting remains unclear. The association between KRAS exon 2 mutational status and clinicopathological variables including progression-free survival and overall survival (PFS and OS, respectively) was retrospectively analyzed in 501 Caucasian stage IIIB-IV LADC patients receiving first-line platinum-based chemotherapy (CHT) with or without bevacizumab (BEV). EGFR (epidermal growth factor receptor)-mutant cases were excluded. Of 247 BEV/CHT and 254 CHT patients, 95 (38.5%) and 75 (29.5%) had mutations in KRAS, respectively. KRAS mutation was associated with smoking (p = 0.008) and female gender (p = 0.002) in the BEV/CHT group. We found no difference in OS between patients with KRAS-mutant versus KRAS wild-type tumors in the CHT-alone group (p = 0.6771). Notably, patients with KRAS-mutant tumors demonstrated significantly shorter PFS (p = 0.0255) and OS (p = 0.0186) in response to BEV/CHT compared to KRAS wild-type patients. KRAS mutation was an independent predictor of shorter PFS (hazard ratio, 0.597; p = 0.011) and OS (hazard ratio, 0.645; p = 0.012) in the BEV/CHT group. G12D KRAS-mutant patients receiving BEV/CHT showed significantly shorter PFS (3.7 months versus 8.27 months in the G12/13x group; p = 0.0032) and OS (7.2 months versus 16.1 months in the G12/13x group; p = 0.0144). In this single-center, retrospective study, KRAS-mutant LADC patients receiving BEV/CHT treatment exhibited inferior PFS and OS compared to those with KRAS wild-type advanced LADC. G12D mutations may define a subset of KRAS-mutant LADC patients unsuitable for antiangiogenic therapy with BEV.
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Affiliation(s)
- Aron Kristof Ghimessy
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
| | - Aron Gellert
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
| | - Erzsebet Schlegl
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
| | - Balazs Hegedus
- Department of Thoracic Surgery, Ruhrlandklinik, University Duisburg-Essen, 45239 Essen, Germany.
- nd Department of Pathology, Semmelweis University, 1091 Budapest, Hungary.
- Tumor Progression Research Group, Hungarian Academy of Sciences-Semmelweis University, 1091 Budapest, Hungary.
| | - Erzsebet Raso
- nd Department of Pathology, Semmelweis University, 1091 Budapest, Hungary.
- Tumor Progression Research Group, Hungarian Academy of Sciences-Semmelweis University, 1091 Budapest, Hungary.
| | - Tamas Barbai
- nd Department of Pathology, Semmelweis University, 1091 Budapest, Hungary.
- Tumor Progression Research Group, Hungarian Academy of Sciences-Semmelweis University, 1091 Budapest, Hungary.
| | - Jozsef Timar
- nd Department of Pathology, Semmelweis University, 1091 Budapest, Hungary.
- Tumor Progression Research Group, Hungarian Academy of Sciences-Semmelweis University, 1091 Budapest, Hungary.
| | - Gyula Ostoros
- th Department of Pulmonology, National Koranyi Institute of Pulmonology, 1122 Budapest, Hungary.
| | - Zsolt Megyesfalvi
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
| | - Balazs Gieszer
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
| | - Judit Moldvay
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
- nd Department of Pathology, Semmelweis University, 1091 Budapest, Hungary.
- MTA-SE NAP, Brain Metastasis Research Group, Hungarian Academy of Sciences, 1091 Budapest, Hungary.
| | - Ferenc Renyi-Vamos
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
| | - Zoltan Lohinai
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
| | - Mir Alireza Hoda
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Centre Vienna, Medical University Vienna, A-1090 Vienna, Austria.
| | - Thomas Klikovits
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Centre Vienna, Medical University Vienna, A-1090 Vienna, Austria.
| | - Walter Klepetko
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Centre Vienna, Medical University Vienna, A-1090 Vienna, Austria.
| | - Viktoria Laszlo
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Centre Vienna, Medical University Vienna, A-1090 Vienna, Austria.
| | - Balazs Dome
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, 1122 Budapest, Hungary.
- Department of Tumor Biology, National Koranyi Institute of Pulmonology-Semmelweis University, 1122 Budapest, Hungary.
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Centre Vienna, Medical University Vienna, A-1090 Vienna, Austria.
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Song T, Jiang L, Zhuo Z, Luo J, Alai G, Shen X, Lin Y. Impacts of thoracoscopic surgery and high grade histologic subtypes on spread through air spaces in small stage I lung adenocarcinomas. J Cancer Res Clin Oncol 2019; 145:2375-2382. [PMID: 31292713 DOI: 10.1007/s00432-019-02972-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 07/03/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVES Spread through air spaces (STAS) as a pattern of invasion in lung adenocarcinomas had been recognized by WHO in 2015. Moreover, STAS was associated significantly with aggressive micropapillary or solid components when presented predominant pattern in lung adenocarcinomas, which had a poor prognostic significance. Small amounts of micropapillary or solid with components could also reduce overall survival and recurrence-free survival but its impact on STAS is unknown now. Some studies have demonstrated manipulations of surgeons and pathologists could affect STAS but the degree of these impacts is not clear. MATERIALS AND METHODS We reviewed resected small (≤ 2 cm) stage I invasive lung adenocarcinomas by thoracoscopic surgery at our institution from January 2017 to October 2018 (n = 277). Micropapillary or solid pattern was considered to be present when the subtype occupied at least 1% of the entire tumor. Lobectomy and segmentectomy were performed using three portals thoracoscopic surgery. Statistical analysis was performed to analyze the correlations of STAS and clinicopathological characteristics. Moreover, we also analyzed the correlated factors of STAS in solid nodules. RESULTS STAS was found in 59 of 163 (36.2%) lobectomy cases and 27 of 114 (23.7%) limited resection cases. Lobectomy group showed a higher incidence of STAS compared with limited resection group (p = 0.027), but the difference was disappeared in multivariate analysis, which showed that STAS was significantly correlated to solid nodules and presence of high grade histologic subtype (mircopapillary or solid). However, both lobectomy and presence of high grade histologic subtype were significantly correlated with STAS in solid nodules. CONCLUSIONS The small amounts of high grade histologic subtypes were also associated with STAS. Thoracoscopic surgery could affect STAS to some degree.
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Affiliation(s)
- Tieniu Song
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China
| | - Lili Jiang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Zeguo Zhuo
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China
| | - Jun Luo
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China
| | - Guha Alai
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China
| | - Xu Shen
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China
| | - Yidan Lin
- Department of Thoracic Surgery, West China Hospital, Sichuan University, 37 Guoxue Alley, Chengdu, 610041, China.
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73
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Kozuma Y, Toyokawa G, Yamada Y, Shoji F, Yamazaki K, Oda Y, Takeo S. Spread through air spaces in non-small cell lung cancer. J Thorac Dis 2019; 11:S1881-S1884. [PMID: 31632774 DOI: 10.21037/jtd.2019.08.97] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yuka Kozuma
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Chuo-ku, Fukuoka, Japan
| | - Gouji Toyokawa
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Chuo-ku, Fukuoka, Japan
| | - Yuichi Yamada
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Fumihiro Shoji
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Chuo-ku, Fukuoka, Japan
| | - Koji Yamazaki
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Chuo-ku, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Sadanori Takeo
- Department of Thoracic Surgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Chuo-ku, Fukuoka, Japan
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Limited Resection Is Associated With a Higher Risk of Locoregional Recurrence than Lobectomy in Stage I Lung Adenocarcinoma With Tumor Spread Through Air Spaces. Am J Surg Pathol 2019; 43:1033-1041. [DOI: 10.1097/pas.0000000000001285] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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75
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Qu G, Shi Y. [Progress on the Study of Tumor Spread Through Air Spaces in the Clinicopathological Characteristics of Lung Adenocarcinoma and Its Influence on the Surgical Treatment and Prognosis of Lung Cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2019; 22:363-368. [PMID: 31196370 PMCID: PMC6580081 DOI: 10.3779/j.issn.1009-3419.2019.06.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
肿瘤肺泡腔内播散(tumor spread through air spaces, STAS)作为一种新的病理侵袭方式,与诸多临床病理因素紧密相关。在肺腺癌中,微乳头和实体型病理亚型与之关系最为密切;针对早期肺腺癌存在STAS,手术类型的治疗上肺叶切除似乎优于亚肺叶切除而获益,可能上调早期肺癌的病理分期;同时,STAS与鳞癌等非小细胞肺癌(non-small cell lung cancer, NSCLC)关系密切。此外,STAS的术中冰冻切片病理检测困难,亦有争议存在。STAS作为肿瘤复发的独立危险因素,亦是提示预后不良的重要因素,本文将STAS的研究现状和进展作一综述。
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Affiliation(s)
- Guidong Qu
- Elderly Thoracic Surgery, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Yunfei Shi
- Elderly Thoracic Surgery, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
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76
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Wang S, Hao J, Qian C, Wang H. Tumor Spread Through Air Spaces Is a Survival Predictor in Non-Small-Cell Lung Cancer. Clin Lung Cancer 2019; 20:e584-e591. [PMID: 31230891 DOI: 10.1016/j.cllc.2019.05.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/20/2019] [Accepted: 05/22/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Tumor spread through air spaces (STAS) is a newly recognized invasion pattern in non-small-cell lung cancer (NSCLC). However, the clinical application value of STAS in NSCLC remains to be clarified. We aimed to comprehensively explore the potential role of STAS as a prognostic indicator in NSCLC. PATIENTS AND METHODS A systematic search was performed in PubMed, Embase, Cochrane Library, and Web of Science until April 15, 2018. A quantitative meta-analysis was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. RESULTS A total of 3231 patients from 8 studies were included. STAS was observed in 1204 cases (37.3%). A significant association was found between STAS and poor progression-free survival (PFS) (hazard ratio [HR], 1.789; P < .001) and overall survival (OS; HR, 1.488; P < .001). STAS was also an independent prognostic factor for PFS (HR, 1.632; P < .001) and OS (HR, 1.475; P < .001) without obvious heterogeneity. Subgroup analyses and meta-regression showed histology type, tumor, node, metastases (TNM) stage, publication year, sample size, region, and quality score did not alter prognostic value of STAS. Tumor STAS was associated with male sex (P < .001), history of smoking (P < .001), tumor budding (P = .038), vascular invasion (P < .001), lymphatic invasion (P < .001), pleural invasion (P < .001), T stage (P < .001), N stage (P < .001), and TNM stage (P < .001). The publication bias was observed. After adjustment using a nonparametric "trim-and-fill" method, corrected HRs had no significant change. CONCLUSION Tumor STAS is associated with clinicopathologically aggressive features and could be exploited as a novel prognostic predictor in NSCLC.
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Affiliation(s)
- Shuai Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiatao Hao
- General Practice Department, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cheng Qian
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Hao Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
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77
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Chen D, Mao Y, Wen J, She Y, Zhu E, Zhu F, Zhang Y, Fan M, Chen C, Chen Y. Tumor Spread Through Air Spaces in Non-Small Cell Lung Cancer: A Systematic Review and Meta-Analysis. Ann Thorac Surg 2019; 108:945-954. [PMID: 30914285 DOI: 10.1016/j.athoracsur.2019.02.045] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/29/2019] [Accepted: 02/19/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND A series of studies have assessed the clinicopathological features and prognostic impact of spread through air spaces (STAS) in non-small cell lung cancer (NSCLC) bringing conflicting findings so far. We performed a systematic review and meta-analysis to synthesize the available evidence regarding to the prognostic value of STAS in NSCLCs. METHODS Studies were identified by searching databases including PubMed, EMBASE, Web of Science, and Cochrane Library up to August 2018 without language restrictions. Results of these searches were filtered according to a set of eligibility criteria and analyzed in line with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. RESULTS A total of 3,754 patients from 14 studies were selected for the present study. The pooled results suggested that presence of STAS was associated with worse recurrence-free survival (hazard ratio [HR], 1.975; 95% confidence interval [CI], 1.691 to 2.307; p < 0.001) and overall survival (HR, 1.75; 95% CI, 1.375 to 2.227; p < 0.001) in NSCLCs. Subgroup analysis by histology type indicated the presence of STAS was significantly associated with inferior recurrence-free survival in resected lung adenocarcinoma (n = 7; HR, 2.288; 95% CI, 1.843 to 2.840; I2 = 7.80%), lung squamous cell carcinoma (n = 3; HR, 1.622; 95% CI, 1.279 to 2.056; I2 = 0%), and lung pleomorphic carcinoma (n = 1; HR, 4.76; 95% CI, 1.168 to 19.398). Additionally, a number of clinicopathological characteristics indicating STAS in NSCLCs are summarized. CONCLUSIONS Our study indicates that tumor STAS was a potentially significant prognostic predictor for surgical patients with NSCLCs. The prognostic impact of STAS present in the resection margin remains undetermined. Further large-scale prospective studies are warranted to confirm the prognostic significance of STAS in patients with NSCLCs.
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Affiliation(s)
- Donglai Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Yiming Mao
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China; Department of Thoracic Surgery, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China
| | - Junmiao Wen
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yunlang She
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Erjia Zhu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Feng Zhu
- Department of Thoracic Surgery, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China
| | - Yongsheng Zhang
- Department of Pathology, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Min Fan
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Yongbing Chen
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China.
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Liu A, Hou F, Qin Y, Song G, Xie B, Xu J, Jiao W. Predictive value of a prognostic model based on pathologic features in lung invasive adenocarcinoma. Lung Cancer 2019; 131:14-22. [PMID: 31027692 DOI: 10.1016/j.lungcan.2019.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/16/2019] [Accepted: 03/03/2019] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Tumor spread through air spaces (STAS) was recently reported as a novel risk factor for the prognosis of patients with resected lung adenocarcinoma that indicates invasive tumor behavior. The purpose of this study was to build a prognostic model consisting of STAS and other pathologic features including visceral pleural invasion (VPI), vascular invasion (VI) and histological subtype (HS) in lung invasive adenocarcinoma. MATERIALS AND METHODS A total of 289 patients with resected lung invasive adenocarcinomas ≤4 cm were analyzed retrospectively to evaluate the potential prognostic value of STAS, VPI, VI and HS for recurrence-free survival (RFS) and overall survival (OS). RESULTS STAS was observed in 143 patients (49.5%). Univariate and multivariate analysis showed that STAS, VPI, VI and HS were significant prognostic factors for poorer RFS and OS. Thus, a prognostic model including STAS, VPI, VI and HS was built using the results of the multivariate analysis. Nomograms were developed to predict the 5-year RFS and OS. The concordance index (C-index) of the prognostic model was 0.8122 for predicting 5-year RFS and 0.8539 for predicting 5-year OS in the internal validation. Moreover, the calibration curves for the 5-year RFS and OS showed that the nomograms were calibrated well. In addition, a similar predicted capability of the prognostic model was observed in the validation cohort. CONCLUSION STAS, VPI, VI and HS were significant prognostic factors for poorer RFS and OS. The prognostic model including STAS, VPI, VI and HS could effectively predict prognosis.
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Affiliation(s)
- Ao Liu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, China
| | - Feng Hou
- Department of Pathology, Affiliated Hospital of Qingdao University, China
| | - Yi Qin
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, China
| | - Guisong Song
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, China
| | - Boheng Xie
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, China
| | - Jin Xu
- Department of Pathology, Affiliated Hospital of Qingdao University, China
| | - Wenjie Jiao
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, China.
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CT Manifestations of Tumor Spread Through Airspaces in Pulmonary Adenocarcinomas Presenting as Subsolid Nodules. J Thorac Imaging 2019; 33:402-408. [PMID: 30067571 DOI: 10.1097/rti.0000000000000344] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE The aim of this study was to identify potential computed tomography manifestations of pulmonary adenocarcinomas presenting as subsolid nodules and associated with the histologic evidence of spread of tumor through air spaces (STAS). MATERIALS AND METHODS From a radiologic-pathologic repository of resected pulmonary adenocarcinomas including 203 subsolid nodules, 40 STAS-positive nodules were randomly selected and matched to 40 STAS-negative nodules. Total average diameter, as well as average and long-axis diameters of the solid component, was measured. The proportion of solid component diameter to total average diameter was calculated. Measurements and proportions between STAS-positive and STAS-negative nodules were compared with paired samples t test, χ test, or the Fisher exact test. RESULTS The total average diameter in STAS-positive nodules was significantly larger than in STAS-negative nodules (P=0.024). The average and long-axis diameters of the solid component of STAS-positive nodules were significantly larger than that of STAS-negative nodules (P=0.001 and 0.003). The proportion of solid component to total average diameter was significantly larger in STAS-positive than in STAS-negative nodules (P=0.041). At a threshold of ≥10 mm for the average and the solid component long-axis diameters, significantly more nodules were STAS-positive than STAS-negative (P=0.015 and 0.001). CONCLUSIONS Total average diameter, average and long-axis diameters of the solid component, and a high proportion of solid component diameter compared with total average diameter are computed tomography manifestations of subsolid pulmonary adenocarcinomas with STAS. These findings could serve as an in-vivo tool for the likelihood estimation of STAS, and consequently influence management of subsolid adenocarcinomas.
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80
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Qiu X, Chen D, Liu Y, Duan S, Zhang F, Zhang Y, Li F, Chen C, Chen Y. Relationship between stromal cells and tumor spread through air spaces in lung adenocarcinoma. Thorac Cancer 2019; 10:256-267. [PMID: 30605235 PMCID: PMC6360243 DOI: 10.1111/1759-7714.12945] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 12/28/2022] Open
Abstract
Background The mechanism underlying tumor spread through air spaces (STAS) has not been well studied. We investigated the role of tumor stromal cells in the pathogenesis of STAS from a pathological perspective and evaluated the prognostic significance of tumor stromal cells and STAS in postoperative patients with lung adenocarcinoma. Methods We retrospectively analyzed 208 postsurgical patients with stage I–IIIA lung adenocarcinoma. The presence of STAS was evaluated by hematoxylin and eosin staining. The expression of α‐smooth muscle actin (SMA)‐positive cancer‐associated fibroblasts (CAFs) and CD204‐positive tumor‐associated macrophages (TAMs) was analyzed by immunohistochemistry. A logistic regression model was applied to confirm the predictive factors of STAS. Survival analysis was performed to evaluate the effect of α‐SMA‐positive CAFs, CD204‐positive TAMs, and STAS on prognosis. A nomogram was generated to evaluate the prognosis of postoperative patients. Results Logistic regression suggested that the expression of α‐SMA‐positive CAFs (P < 0.001) and the number of CD204‐positive TAMs (P < 0.001) were related to the presence of STAS. The multivariate Cox proportional hazards model suggested that STAS (P = 0.004), α‐SMA‐positive CAFs (P < 0.001), and CD204‐positive TAMs (P < 0.001) were independent risk factors for prognosis. Harrell's c‐indexes for overall and recurrence‐free survival prediction based on nomograms were 0.84 (95% confidence interval 0.76–0.91) and 0.82 (95% confidence interval 0.76–0.89), respectively. Conclusions The presence of STAS was associated with high expression of α‐SMA and CD204 in lung adenocarcinoma. Nomograms including STAS and stromal cells as variables are recommended as practical models to evaluate the prognosis of lung adenocarcinoma patients.
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Affiliation(s)
- Xie Qiu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Thoracic Surgery, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Donglai Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yangyang Liu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Shanzhou Duan
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Fuquan Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongsheng Zhang
- Department of Pathology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Feng Li
- Department of Pathology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yongbing Chen
- Department of Thoracic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
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Eguchi T, Kameda K, Lu S, Bott MJ, Tan KS, Montecalvo J, Chang JC, Rekhtman N, Jones DR, Travis WD, Adusumilli PS. Lobectomy Is Associated with Better Outcomes than Sublobar Resection in Spread through Air Spaces (STAS)-Positive T1 Lung Adenocarcinoma: A Propensity Score-Matched Analysis. J Thorac Oncol 2019; 14:87-98. [PMID: 30244070 PMCID: PMC6309668 DOI: 10.1016/j.jtho.2018.09.005] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/05/2018] [Accepted: 09/11/2018] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Spread through air spaces (STAS) is a form of invasion wherein tumor cells extend beyond the tumor edge within the lung parenchyma. In lung adenocarcinoma (ADC), we investigated the (1) association between STAS and procedure-specific outcomes (sublobar resection and lobectomy), (2) effect of surgical margin-to-tumor diameter ratio in STAS-positive patients, and (3) potential utility of frozen sections (FSs) for detecting STAS intraoperatively. METHODS We investigated 1497 patients who underwent lobectomy (n = 970) or sublobar resection (n = 527) for T1N0M0 lung ADC after propensity score matching. Outcomes were analyzed by using a competing risks approach. The effect of margin-to-tumor ratio on recurrence pattern (locoregional and distant) was investigated in patients who underwent sublobar resection. Five pathologists evaluated the feasibility of intraoperatively identifying STAS by using FSs (sensitivity, specificity, and interrater reliability). RESULTS On multivariable analysis after propensity score matching (349 pairs/procedure), sublobar resection was significantly associated with recurrence (subhazard ratio = 2.84 [p < 0.001]) and lung cancer-specific death (subhazard ratio = 2.63 [p = 0.021]) in patients with STAS but not in those without STAS. Patients with STAS who underwent sublobar resection had a higher risk of locoregional recurrence regardless of margin-to-tumor ratio (for a margin-to-tumor ratio of ≥1 versus <1, the 5-year cumulative incidence of recurrence rates were 16% and 25%, respectively); among patients without STAS, locoregional recurrences occurred in patients with margin-to-tumor ratio lower than 1 (a 5-year cumulative incidence of recurrence rate of 7%). The sensitivity and specificity for detecting STAS by use of FSs were 71% and 92%, with substantial interrater reliability (Gwet's AC1, 0.67). CONCLUSIONS In patients with T1 lung ADC with STAS, lobectomy was associated with better outcomes than sublobar resection was. Pathologists can recognize STAS on FSs.
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Affiliation(s)
- Takashi Eguchi
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Division of Thoracic Surgery, Department of Surgery, Shinshu University, Matsumoto, Japan
| | - Koji Kameda
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Thoracic Surgery, National Defense Medical College, Tokorozawa, Japan
| | - Shaohua Lu
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Matthew J Bott
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kay See Tan
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Joseph Montecalvo
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Jason C Chang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Natasha Rekhtman
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - David R Jones
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - William D Travis
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Prasad S Adusumilli
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York; Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, New York, New York.
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Shiono S, Endo M, Suzuki K, Hayasaka K, Yanagawa N. Spread through air spaces in lung cancer patients is a risk factor for pulmonary metastasis after surgery. J Thorac Dis 2019; 11:177-187. [PMID: 30863587 PMCID: PMC6384349 DOI: 10.21037/jtd.2018.12.21] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 11/29/2018] [Indexed: 11/06/2022]
Abstract
BACKGROUND Spread through air spaces (STAS) is regarded as a significant risk factor for lung cancer recurrence. STAS consists of micropapillary clusters, solid nests, or single cells beyond the edge of the tumor into air spaces in the surrounding lung parenchyma. However, the patterns of lung cancer recurrence have not been clarified in patients with STAS. The aim of this study was to explore STAS and recurrence patterns in patients who underwent lung cancer surgery. METHODS Between January 2000 and December 2017, a total of 1,426 patients underwent complete resection of lung cancer. We studied 848 patients with pathological stage I disease who underwent surgery. Recurrence patterns and recurrence-free rates were determined from pathological findings, particularly the presence of STAS. Locoregional recurrences included surgical margin recurrences, hilar and mediastinal lymph node metastases, ipsilateral lobe metastases, and pleural dissemination, whereas distant recurrences included extrathoracic organ and contralateral lobe metastases. RESULTS STAS was observed in 139 of 848 (16.4%) cases. Recurrences developed in 108 (12.7%) cases: locoregional recurrences in 76 (9.0%), distant metastases in 27 (3.2%), and both in 5 (0.6%) cases. Among recurrences, pleural dissemination developed in 12 (1.4%) and pulmonary metastases in 46 (5.4%) cases. Five-year recurrence-free rates were 65.4% among patients with STAS and 89.0% among patients without STAS. Univariate and multivariate analyses revealed that STAS was a significant risk factor for recurrence (P<0.001), particularly locoregional recurrence (P=0.005). In addition, STAS was a significant risk factor for pulmonary metastasis (P=0.009). CONCLUSIONS Among pathological stage I patients who undergo complete resection of lung cancer, patients with STAS tend to develop locoregional recurrence and pulmonary metastases.
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Affiliation(s)
- Satoshi Shiono
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Makoto Endo
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Katsuyuki Suzuki
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Kazuki Hayasaka
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Naoki Yanagawa
- Department of Pathology, Yamagata Prefectural Central Hospital, Yamagata, Japan
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Correlation of tumor spread through air spaces and clinicopathological characteristics in surgically resected lung adenocarcinomas. Lung Cancer 2018; 126:189-193. [PMID: 30527186 DOI: 10.1016/j.lungcan.2018.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 11/04/2018] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Tumor spread through air spaces (STAS) has recently been reported as a novel invasive pattern in lung adenocarcinoma, but the correlation between other clinicopathological and genetic profiles has not been well studied. The aim of this study was to investigate these correlations in patients with surgically resected lung adenocarcinoma. MATERIALS AND METHODS Five hundred consecutive patients with lung adenocarcinoma who underwent curative lung tumor resection and with available STAS profile were reviewed retrospectively from January to December 2016. The correlations of STAS presence and clinicopathological and genetic characteristics were analyzed. RESULTS One hundred thirty-four patients (26.8%) had positive STAS. The pathological stage of these patients was adenocarcinoma in situ, IA, IB, II, and III in 25 (5%), 343 (68.6%), 63 (12.6%), 29 (5.8%), and 40 (8%), respectively. Multivariate analysis showed that the presence of STAS was significantly correlated to higher T (p = 0.001) and N (p = 0.032) stages, moderate/poor differentiation (p = 0.001), and the presence of lymphovascular invasion (p = 0.001). Although positive epidermal growth factor receptor mutation and non-lepidic histologic subtypes were correlated with the presence of STAS in the univariate analysis, they were not significantly correlated with the presence of STAS in the multivariate analysis (p = 0.676 and 0.286, respectively). CONCLUSIONS STAS was significantly correlated with several invasive clinicopathological characteristics in surgically resected lung adenocarcinoma. Based on our results and current evidence, the presence of STAS may be considered as a staging profile in future staging system.
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84
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Brown NA, Aisner DL, Oxnard GR. Precision Medicine in Non-Small Cell Lung Cancer: Current Standards in Pathology and Biomarker Interpretation. Am Soc Clin Oncol Educ Book 2018; 38:708-715. [PMID: 30231309 DOI: 10.1200/edbk_209089] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Non-small cell lung cancer (NSCLC) has become a prominent example of precision medicine among solid tumor malignancies. Clinical management of NSCLC now depends on surgical, chemotherapeutic, and radiation treatment regimens based on pathologic findings and clinical staging as well as targeted therapies based on molecular profiling. As molecular testing becomes increasingly important, preserving tissue for this purpose while rendering an accurate histologic diagnosis becomes a key consideration, particularly in advanced-stage NSCLC, in which small biopsy samples or aspirates are often the only specimen available. Next-generation sequencing panels are a powerful method of providing information relevant for both standard-of-care and investigational treatment options. However, taking advantage of the abundance of information gleaned from these panels requires careful annotation, prioritization, and reporting of molecular findings and their clinical significance. Although molecular profiling has traditionally relied on direct sampling of neoplastic tissue, blood-based diagnostics now offer the potential to provide some clinically useful information noninvasively.
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Affiliation(s)
- Noah A Brown
- From the University of Michigan, Ann Arbor, MI; University of Colorado Cancer Center, Denver, CO; Dana-Farber Cancer Institute, Boston, MA
| | - Dara L Aisner
- From the University of Michigan, Ann Arbor, MI; University of Colorado Cancer Center, Denver, CO; Dana-Farber Cancer Institute, Boston, MA
| | - Geoffrey R Oxnard
- From the University of Michigan, Ann Arbor, MI; University of Colorado Cancer Center, Denver, CO; Dana-Farber Cancer Institute, Boston, MA
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85
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Dou TH, Coroller TP, van Griethuysen JJM, Mak RH, Aerts HJWL. Peritumoral radiomics features predict distant metastasis in locally advanced NSCLC. PLoS One 2018; 13:e0206108. [PMID: 30388114 PMCID: PMC6214508 DOI: 10.1371/journal.pone.0206108] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/05/2018] [Indexed: 12/23/2022] Open
Abstract
Purpose Radiomics provides quantitative tissue heterogeneity profiling and is an exciting approach to developing imaging biomarkers in the context of precision medicine. Normal-appearing parenchymal tissues surrounding primary tumors can harbor microscopic disease that leads to increased risk of distant metastasis (DM). This study assesses whether computed-tomography (CT) imaging features of such peritumoral tissues can predict DM in locally advanced non-small cell lung cancer (NSCLC). Material and methods 200 NSCLC patients of histological adenocarcinoma were included in this study. The investigated lung tissues were tumor rim, defined to be 3mm of tumor and parenchymal tissue on either side of the tumor border and the exterior region extended from 3 to 9mm outside of the tumor. Fifteen stable radiomic features were extracted and evaluated from each of these regions on pre-treatment CT images. For comparison, features from expert-delineated tumor contours were similarly prepared. The patient cohort was separated into training and validation datasets for prognostic power evaluation. Both univariable and multivariable analyses were performed for each region using concordance index (CI). Results Univariable analysis reveals that six out of fifteen tumor rim features were significantly prognostic of DM (p-value < 0.05), as were ten features from the visible tumor, and only one of the exterior features was. Multivariablely, a rim radiomic signature achieved the highest prognostic performance in the independent validation sub-cohort (CI = 0.64, p-value = 2.4×10−5) significantly over a multivariable clinical model (CI = 0.53), a visible tumor radiomics model (CI = 0.59), or an exterior tissue model (CI = 0.55). Furthermore, patient stratification by the combined rim signature and clinical predictor led to a significant improvement on the clinical predictor alone and also outperformed stratification using the combined tumor signature and clinical predictor. Conclusions We identified peritumoral rim radiomic features significantly associated with DM. This study demonstrated that peritumoral imaging characteristics may provide additional valuable information over the visible tumor features for patient risk stratification due to cancer metastasis.
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Affiliation(s)
- Tai H. Dou
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States of America
- * E-mail:
| | - Thibaud P. Coroller
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Joost J. M. van Griethuysen
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States of America
- Netherlands Cancer Institute (NKI), Amsterdam, the Netherlands
| | - Raymond H. Mak
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Hugo J. W. L. Aerts
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States of America
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86
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Ma K, Zhan C, Wang S, Shi Y, Jiang W, Wang Q. Spread Through Air Spaces (STAS): A New Pathologic Morphology in Lung Cancer. Clin Lung Cancer 2018; 20:e158-e162. [PMID: 30482593 DOI: 10.1016/j.cllc.2018.10.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 10/10/2018] [Accepted: 10/17/2018] [Indexed: 12/25/2022]
Abstract
In 2015, the World Health Organization classification of lung cancer proposed the concept of spread through air spaces (STAS) as a new pattern of invasion in lung adenocarcinoma. The definition of STAS included one or more pathologic micropapillary clusters, solid nests or single cells beyond the edge of the tumor into air spaces in the surrounding lung parenchyma, and separation from the main tumor other than tumor islands. The roles of STAS has been investigated in many studies. The results indicated that STAS is associated with key clinical variables and the prognosis of patients both in lung adenocarcinoma, lung squamous cell carcinoma, small-cell lung cancer, and lung pleomorphic carcinoma. This mini review will be focused on the developments and perspectives of STAS in lung cancer.
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Affiliation(s)
- Ke Ma
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Shuai Wang
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China.
| | - Yu Shi
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Wei Jiang
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China.
| | - Qun Wang
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
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Paulk A, Tavora F, Burke A. Pulmonary mucinous adenocarcinomas: a clinicopathologic series with emphasis on the prognostic significance of spread through alveolar spaces, and presence of solid growth component. SURGICAL AND EXPERIMENTAL PATHOLOGY 2018. [DOI: 10.1186/s42047-018-0013-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Mucinous adenocarcinoma is often considered a relatively poor prognostic group among adenocarcinomas of the lung and has a high rate of pulmonary recurrence. Pathologic parameters predicting poor outcome have not been extensively studied, including the presence of spread through alveolar spaces (STAS).
Methods
We retrospectively studied time to lung recurrence and time to distant metastasis in 30 mucinous lung tumors, in relationship to histologic parameters, including spread through alveolar spaces, tumor size, invasive size, % invasive size, growth pattern (solid or cribriform, acinar, papillary, micropapillary, and lepidic), type of mucin-producing cell, and TTF-1 positivity.
Results
Median follow-up was 40 months. There were 7 patients (23%) with lung recurrence (mean 22 months) and 7 (23%) with distant metastases (mean 3.7 months). Columnar / goblet cell type was inversely correlated with TTF-1 expression (p = 0.01). The only pathologic parameters associated with outcome were STAS for lung recurrence (p = .005) and solid/cribriform growth (≥ 20% of tumor) for distant metastasis (p = 0.003).
Conclusions
Mucinous adenocarcinomas of the lung are similar to non-mucinous prognostically, in that STAS and solid growth are poor prognosticators, for local and distant recurrence, respectively. The growth patterns of mucinous adenocarcinomas should be reported similar to reporting of non-mucinous adenocarcinomas.
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88
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Liu Y, Chen D, Qiu X, Duan S, Zhang Y, Li F, Chen C, Zhou Y, Chen Y. Relationship between MTA1 and spread through air space and their joint influence on prognosis of patients with stage I-III lung adenocarcinoma. Lung Cancer 2018; 124:211-218. [PMID: 30268463 DOI: 10.1016/j.lungcan.2018.07.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To characterize the relationship between metastasis-associated protein 1 (MTA1) and spread through air spaces (STAS), and to investigate the joint prognostic value of MTA1 and STAS in resected lung adenocarcinomas. METHODS We retrospectively reviewed 208 operated patients with stage I-III lung adenocarcinoma from January 2009 to December 2014. STAS was identified by H&E staining. Expression level of MTA1 was determined by immunohistochemistry. The relationship between MTA1 and STAS was determined by using a logistic regression model. The synergistic effects of MTA1 and STAS on prognosis were analyzed using a Cox proportional hazards regression model. RESULTS Patients with either STAS or high expression of MTA1 had significantly worse overall survival (OS) and shorter recurrence-free survival (RFS) than those without STAS or with low expression of MTA1 (p < 0.001). Among 107 patients with STAS presence in lung adenocarcinomas, 57 (53.3%) cases had high expression of MTA1. High expression of MTA1 was positively associated with the increased frequency of STAS presence (p < 0.01). Subgroup analysis showed that the patients with both high expression of MTA1 and STAS-positive presence had significantly worst OS and shortest RFS compared with the others (p < 0.001), while the patients with high expression of MTA1 /STAS-negative presence shared similar RFS with those with high expression of MTA1 /STAS-positive presence. Furthermore, high MTA1 levels in STAS-positive patients was associated with a higher risk of postoperative metastasis and recurrence (p < 0.001). CONCLUSIONS STAS was more frequently observed in adenocarcinomas with high MTA1 expression levels. MTA1 was associated with a higher risk of worse overall survival among patients with STAS and could provide helpful prognostic information in STAS-positive patients with stage I-III lung adenocarcinoma.
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Affiliation(s)
- Yangyang Liu
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Donglai Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Xie Qiu
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Shanzhou Duan
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongsheng Zhang
- Department of Pathology, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Feng Li
- Department of Pathology, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Yiting Zhou
- Department of Epidemiology, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Yongbing Chen
- Department of Thoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China.
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89
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Kim SK, Kim TJ, Chung MJ, Kim TS, Lee KS, Zo JI, Shim YM. Lung Adenocarcinoma: CT Features Associated with Spread through Air Spaces. Radiology 2018; 289:831-840. [PMID: 30179108 DOI: 10.1148/radiol.2018180431] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To identify the features at CT that are predictive of spread through air spaces (STAS) in surgically resected lung adenocarcinomas. Materials and Methods For this retrospective study, presence of STAS was evaluated in 948 consecutive patients who underwent surgical resection for lung adenocarcinoma from April 2015 to December 2016. Patients who were positive for STAS and negative for STAS were matched at a ratio of 1:2 by using patient variables (age, sex, and smoking status). CT features (ie, percentage of solid component, maximum diameter of solid component, lesion density, location, margin, shape, pseudocavity, calcification, central low attenuation, ill-defined peripheral opacity, air bronchogram, satellite lesions, and pleural retraction) were analyzed by using multivariable logistic regression and receiver operating characteristic curves. Results The final study population consisted of 276 patients (mean age, 59 years; age range, 32-78 years) including 129 men (mean age, 60 years; age range, 36-78 years) and 147 women (mean age, 59 years; age range, 32-78 years). Ninety-two patients were positive for STAS and 184 patients were negative for STAS. STAS was more common in solid tumors (71 of 92; 77%) than in part-solid (21 of 92; 23%) or ground-glass lesions (0 of 92; 0%) (P < .001). STAS was also associated with central low attenuation, ill-defined opacity, air bronchogram, and percentage of solid component (all P < .001). Percentage of solid component was an independent predictor of STAS (odds ratio, 1.06; 95% confidence interval: 1.03, 1.08) and a cut-off value of 90% showed a discriminatory power with a sensitivity of 89.2% and a specificity of 60.3%. Conclusion Percentage of solid component was independently associated with spread through air spaces in lung adenocarcinomas. © RSNA, 2018 Online supplemental material is available for this article.
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Affiliation(s)
- Seon Kyoung Kim
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Tae Jung Kim
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Myung Jin Chung
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Tae Sung Kim
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Kyung Soo Lee
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Jae Ill Zo
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Young Mog Shim
- From the Departments of Radiology (S.K.K., T.J.K., M.J.C., T.S.K., K.S.L.) and Thoracic Surgery (J.I.Z., Y.M.S.), Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
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90
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Toyokawa G, Yamada Y, Tagawa T, Oda Y. Significance of spread through air spaces in early-stage lung adenocarcinomas undergoing limited resection. Thorac Cancer 2018; 9:1255-1261. [PMID: 30079987 PMCID: PMC6166074 DOI: 10.1111/1759-7714.12828] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 07/04/2018] [Indexed: 11/26/2022] Open
Abstract
Background In early‐stage lung adenocarcinomas, spread through air spaces (STAS) are reported to be a prognostic factor in patients who have undergone sublobar resection, but not lobectomy. In contrast, reports have also shown that STAS is significantly associated with poor survival outcomes after lobectomy, but not after limited resection. Thus, the prognostic impact of STAS differs according to published reports. Methods A total of 82 patients with early‐stage adenocarcinomas who underwent limited resection and whose STAS status could be examined were enrolled in this retrospective study. We evaluated the association between STAS and clinicopathological characteristics and postoperative survival. Results Among 82 patients, 31 (37.8%) were positive for STAS, while 51 (62.2%) were negative. STAS was significantly associated with advanced tumor stage (P < 0.01), lower histological differentiation (P = 0.01), and the presence of pleural invasion (P = 0.01). Patients with STAS had significantly shorter recurrence‐free survival (RFS) and overall survival (OS) than those without STAS (P < 0.01 and P = 0.02, respectively). According to multivariate analysis, positivity for STAS was an independent prognostic parameter for RFS (P < 0.01), but not OS (P = 0.45). Three patients who developed surgical margin recurrence and one patient who developed distant recurrence were all positive for STAS. Conclusions STAS was predictive of poor postoperative survival in patients with early‐stage adenocarcinomas treated with limited resection and was associated with surgical margin recurrence.
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Affiliation(s)
- Gouji Toyokawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichi Yamada
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuzo Tagawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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91
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Blaauwgeers H, Russell PA, Jones KD, Radonic T, Thunnissen E. Pulmonary loose tumor tissue fragments and spread through air spaces (STAS): Invasive pattern or artifact? A critical review. Lung Cancer 2018; 123:107-111. [PMID: 30089579 DOI: 10.1016/j.lungcan.2018.07.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/08/2018] [Accepted: 07/11/2018] [Indexed: 10/28/2022]
Abstract
The concept of loose tumor tissue fragments as a pattern of invasion in lung carcinoma has recently been proposed and is included in the 2015 WHO fascicle on the classification of lung tumors, so-called "spread through airs paces" or STAS. This inclusion is controversial, as there are significant data to support that this histologic finding represents an artifact of tissue handling and processing rather than a pattern of invasion. These data are summarized in this review. These data are summarized in this review and support the conclusion that the inclusion of STAS in the WHO classification for lung cancer as a pattern of invasion was premature and erroneous. In our opinion, these tumor cell clusters or loose cells appear to be simply an artifact, although one which may or may not pinpoint to a high-grade tumor with discohesive cells and adverse prognosis.
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Affiliation(s)
- Hans Blaauwgeers
- Department of Pathology, OLVG, Oosterpark 9, 1091 AC, Amsterdam, The Netherlands
| | - Prudence A Russell
- Department of Anatomical Pathology, St Vincent's Hospital, University of Melbourne, Fitzroy, 3065, Victoria, Australia
| | - Kirk D Jones
- Department of Pathology, UCSF Medical Center, 550 Parnassus Ave, San Francisco, CA, 94143, USA
| | - Teodora Radonic
- Department of Pathology, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Erik Thunnissen
- Department of Pathology, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
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92
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Yokoyama S, Murakami T, Tao H, Onoda H, Hara A, Miyazaki R, Furukawa M, Hayashi M, Inokawa H, Okabe K, Akagi Y. Tumor Spread Through Air Spaces Identifies a Distinct Subgroup With Poor Prognosis in Surgically Resected Lung Pleomorphic Carcinoma. Chest 2018; 154:838-847. [PMID: 29932891 DOI: 10.1016/j.chest.2018.06.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/05/2018] [Accepted: 06/01/2018] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Tumor spread through air spaces (STAS) has recently been reported as a novel form of lung adenocarcinoma invasion that can negatively affect survival; however, its role in pleomorphic carcinoma remains unclear. The goal of this study was to characterize tumor STAS in pleomorphic carcinoma, including its association with clinicopathologic features and prognosis. METHODS Tumor specimens obtained from 35 consecutive patients with pleomorphic carcinoma who underwent surgical resection between 2009 and 2015 were reviewed. Tumor STAS was defined as tumor cells spreading within the air spaces in the surrounding lung parenchyma beyond the edge of the primary tumor. RESULTS Fourteen patients (40%) had evidence of STAS-positive pleomorphic carcinomas. Three types of morphologic findings were observed: single cells, small tumor cell clusters, and tumor nests. Tumor necrosis tended to be more prevalent in STAS-positive tumors than in STAS-negative tumors (P = .094). Patients with STAS experienced significantly worse recurrence-free survival (P = .005) and overall survival (P = .002) rates than those without STAS. Moreover, multivariate analysis revealed that tumor STAS was an independent risk factor for both recurrence (P = .014) and poor overall survival (P = .042). CONCLUSIONS In this first study of its kind, tumor STAS in patients with pleomorphic carcinoma was shown to be associated with high recurrence rates and poor survival after surgical resection. Hence, tumor STAS can serve as a predictor of postoperative survival; this information will enable better risk stratification and more effective clinical management of patients with this rare type of tumor.
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Affiliation(s)
- Shintaro Yokoyama
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan; Department of Clinical Research, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan; Department of Surgery, Kurume University School of Medicine, Kurume, Japan.
| | - Tomoyuki Murakami
- Department of Clinical Research, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan; Department of Pathology, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan
| | - Hiroyuki Tao
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Hideko Onoda
- Department of Radiology, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Akio Hara
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Ryohei Miyazaki
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Masashi Furukawa
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Masataro Hayashi
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Hidetoshi Inokawa
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Kazunori Okabe
- Division of Thoracic Surgery, Department of Surgery, National Hospital Organization Yamaguchi-Ube Medical Center, Ube, Japan
| | - Yoshito Akagi
- Department of Surgery, Kurume University School of Medicine, Kurume, Japan
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Yi ES, Lee GK. Updates on Selected Topics in Lung Cancers: Air Space Invasion in Adenocarcinoma and Ki-67 Staining in Carcinoid Tumors. Arch Pathol Lab Med 2018; 142:947-951. [DOI: 10.5858/arpa.2017-0482-ra] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—
Air space invasion or aerogenous spread of lung adenocarcinoma is a relatively new concept and has been implicated as a potential prognostic factor as well as has been added as an exclusion point in the diagnosis of minimally invasive adenocarcinoma. Potential role for Ki-67 immunostaining as a diagnostic and prognostic marker in pulmonary carcinoid tumors has been suggested in the literature, given the significant interobserver variability and the difficulty in predicting their clinical behavior.
Objective.—
To review the concept of air space invasion in lung adenocarcinoma and the current controversies regarding the role of Ki-67 immunostaining on pulmonary carcinoid tumors
Data Sources.—
PubMed search of English literature.
Conclusions.—
Pathologists need to recognize air space invasion with a critical evaluation to differentiate it from artifacts that are commonly seen in sections. Currently, Ki-67 immunostaining is not recommended for routine use in the diagnosis of pulmonary carcinoid tumors or for predicting their prognosis, except for the differential diagnosis from small cell carcinomas or large cell neuroendocrine carcinomas in small biopsy specimens with crush artifacts.
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Affiliation(s)
| | - Geon Kook Lee
- From the Division of Anatomic Pathology, Mayo Clinic Rochester, Rochester, Minnesota (Dr Yi); and the Department of Pathology, National Cancer Center Korea, Goyang-si, Korea (Dr Lee)
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94
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Toyokawa G, Yamada Y, Tagawa T, Kozuma Y, Matsubara T, Haratake N, Takamori S, Akamine T, Oda Y, Maehara Y. Significance of Spread Through Air Spaces in Resected Pathological Stage I Lung Adenocarcinoma. Ann Thorac Surg 2018; 105:1655-1663. [DOI: 10.1016/j.athoracsur.2018.01.037] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 01/05/2018] [Accepted: 01/15/2018] [Indexed: 02/02/2023]
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95
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Hao H, Zhou Z, Li S, Maquilan G, Folkert MR, Iyengar P, Westover KD, Albuquerque K, Liu F, Choy H, Timmerman R, Yang L, Wang J. Shell feature: a new radiomics descriptor for predicting distant failure after radiotherapy in non-small cell lung cancer and cervix cancer. Phys Med Biol 2018; 63:095007. [PMID: 29616661 DOI: 10.1088/1361-6560/aabb5e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Distant failure is the main cause of human cancer-related mortalities. To develop a model for predicting distant failure in non-small cell lung cancer (NSCLC) and cervix cancer (CC) patients, a shell feature, consisting of outer voxels around the tumor boundary, was constructed using pre-treatment positron emission tomography (PET) images from 48 NSCLC patients received stereotactic body radiation therapy and 52 CC patients underwent external beam radiation therapy and concurrent chemotherapy followed with high-dose-rate intracavitary brachytherapy. The hypothesis behind this feature is that non-invasive and invasive tumors may have different morphologic patterns in the tumor periphery, in turn reflecting the differences in radiological presentations in the PET images. The utility of the shell was evaluated by the support vector machine classifier in comparison with intensity, geometry, gray level co-occurrence matrix-based texture, neighborhood gray tone difference matrix-based texture, and a combination of these four features. The results were assessed in terms of accuracy, sensitivity, specificity, and AUC. Collectively, the shell feature showed better predictive performance than all the other features for distant failure prediction in both NSCLC and CC cohorts.
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Affiliation(s)
- Hongxia Hao
- School of Computer Science and Technology, Xidian University, Xi'an 710071, People's Republic of China. Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education, Xidian University, Xi'an 710071, People's Republic of China
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96
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Toyokawa G, Yamada Y, Tagawa T, Kinoshita F, Kozuma Y, Matsubara T, Haratake N, Takamori S, Akamine T, Hirai F, Oda Y, Maehara Y. Significance of Spread Through Air Spaces in Resected Lung Adenocarcinomas With Lymph Node Metastasis. Clin Lung Cancer 2018; 19:395-400.e1. [PMID: 29735272 DOI: 10.1016/j.cllc.2018.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/03/2018] [Accepted: 04/10/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Spread through air spaces (STAS) is a recently recognized invasive pattern of lung cancer defined by the World Health Organization as micropapillary clusters, solid nests, or single cells spreading within air spaces beyond the edge of the main tumor. Although STAS has been shown to be a significant prognosticator for the postoperative survival in early-stage lung cancer treated with limited resection, its prognostic impact on the survival in completely resected adenocarcinomas with lymph node metastasis remains unclear. PATIENTS AND METHODS STAS was assessed in a total of 63 adenocarcinomas with lymph node metastasis in patients who underwent complete resection. STAS was defined as tumor cells within air spaces in the lung parenchyma beyond the edge of the main tumor. We evaluated the association between STAS and the clinicopathologic characteristics and the postoperative survival. RESULTS Among 63 patients, 31 (49.2%) and 32 (50.8%) had disease that was pathologically positive for N1 and N2, respectively. STAS was observed in 45 patients (73.0%) and was not significantly associated with any clinicopathologic characteristics. Patients with the STAS had significantly shorter recurrence-free survival (RFS) but not overall survival than those without STAS (P = .04 and P = .35, respectively). The 5-year RFS in patients with and without STAS was 25.1% and 56.7%, respectively. According to a multivariate analysis, positivity for STAS remained an independent prognostic parameter for RFS (hazard ratio = 3.09; 95% confidence interval, 1.47-7.16; P < .01). CONCLUSION STAS was predictive of a poor RFS in completely resected adenocarcinomas with lymph node metastasis.
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Affiliation(s)
- Gouji Toyokawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | - Yuichi Yamada
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuzo Tagawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Fumihiko Kinoshita
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuka Kozuma
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Taichi Matsubara
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naoki Haratake
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinkichi Takamori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takaki Akamine
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Fumihiko Hirai
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiko Maehara
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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97
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Spread Through Air Spaces Is a Prognostic Factor in Sublobar Resection of Non-Small Cell Lung Cancer. Ann Thorac Surg 2018; 106:354-360. [PMID: 29625101 DOI: 10.1016/j.athoracsur.2018.02.076] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND Spread through air spaces (STAS) identified in lung cancer is considered to be a risk factor for recurrence after surgery. The purpose of this study is to clarify the prognostic impact of STAS in sublobar resections. METHODS We studied 514 patients with clinical stage IA cancers: 329 underwent lobectomies and 185 underwent sublobar resections. We assessed the prognostic impact of STAS in the cases with a sublobar resection for stage IA lung cancer versus the cases with a lobectomy. RESULTS STAS was found in 73 of 329 (22.2%) lobectomy cases and 31 of 185 (16.8%) sublobar resection cases. For overall survival, univariate analysis revealed that STAS was not a prognostic factor in the lobectomy group, but it was a significantly worse prognostic factor for the sublobar resection group in both univariate and multivariate analyses. For the recurrence-free rate, multivariate analysis showed STAS was not a risk factor in the lobectomy group, but it was a significant risk factor for the sublobar resection group in both univariate and multivariate analyses. Patients with STAS and sublobar resection had a significantly higher rate of pulmonary metastases than did patients with STAS and lobectomy (8 of 31 [25.8%] vs 6 of 73 [8.2%]). CONCLUSIONS STAS is a prognostic factor of poor outcomes for sublobar resection in patients with lung cancer. The worse prognosis for sublobar resection would be associated with STAS.
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98
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Nakajima T, Morimoto J, Yoshino I. Tumor spread through air space, the clinical implications for T factor and effects on the disease recurrence and prognosis. J Thorac Dis 2018; 10:539-543. [PMID: 29607107 DOI: 10.21037/jtd.2018.01.66] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Takahiro Nakajima
- Department of General Thoracic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Junichi Morimoto
- Department of General Thoracic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Ichiro Yoshino
- Department of General Thoracic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
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Shiono S. Spread through air spaces-novel pattern of cancer progression. J Thorac Dis 2018; 10:581-584. [PMID: 29607116 DOI: 10.21037/jtd.2018.01.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Satoshi Shiono
- Department of Thoracic Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan
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100
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Kang YK, Song YS, Cho S, Jheon S, Lee WW, Kim K, Kim SE. Prognostic stratification model for patients with stage I non-small cell lung cancer adenocarcinoma treated with surgical resection without adjuvant therapies using metabolic features measured on F-18 FDG PET and postoperative pathologic factors. Lung Cancer 2018; 119:1-6. [PMID: 29656743 DOI: 10.1016/j.lungcan.2018.02.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 02/19/2018] [Accepted: 02/21/2018] [Indexed: 01/10/2023]
Abstract
PURPOSE In the management of non-small cell lung cancer (NSCLC), the prognostic stratification of stage I tumors without indication of adjuvant therapy, remains to be elucidated in order to better select patients who can benefit from additional therapies. We aimed to stratify the prognosis of patients with stage I NSCLC adenocarcinoma using clinicopathologic factors and F-18 FDG PET. MATERIALS AND METHODS We retrospectively enrolled 128 patients with stage I NSCLC without any high-risk factors, who underwent curative surgical resection without adjuvant therapies. Preoperative clinical and postoperative pathologic factors were evaluated by medical record review. Standardized uptake value corrected with lean body mass (SULmax) was measured on F-18 FDG PET. Among the factors, independent predictors for recurrence-free survival (RFS) were selected using univariate and stepwise multivariate survival analyses. A prognostic stratification model for RFS was designed using the selected factors. RESULTS Tumors recurred in nineteen patients (14.8%). Among the investigated clinicopathologic and FDG PET factors, SULmax on PET and spread through air spaces (STAS) on pathologic review were determined to be independent prognostic factors for RFS. A prognostic model was designed using these two factors in the following manner: (1) Low-risk: SULmax ≤ 1.9 and no STAS, (2) intermediate-risk: neither low-risk nor high-risk, (3) high-risk: SULmax>1.9 and observed STAS. This model exhibited significant predictive power for RFS. CONCLUSION We showed that FDG uptake and STAS are significant prognostic markers in stage I NSCLC adenocarcinoma treated with surgical resection without adjuvant therapies.
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Affiliation(s)
- Yeon-Koo Kang
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea.
| | - Yoo Sung Song
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.
| | - Sukki Cho
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Sanghoon Jheon
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Won Woo Lee
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea.
| | - Kwhanmien Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Sang Eun Kim
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea; Center for Nanomolecular Imaging and Innovative Drug Development, Advanced Institutes of Convergence Technology, Suwon, Gyeonggi-do, Republic of Korea.
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