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Mamede I, Ribeiro L, Stecca C, Escalante-Romero L, Cypel M. Survival and pulmonary function in stage IA non-small cell lung cancer after sublobar resection versus lobectomy: An updated meta-analysis. J Surg Oncol 2024. [PMID: 38979906 DOI: 10.1002/jso.27767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/20/2024] [Accepted: 07/02/2024] [Indexed: 07/10/2024]
Abstract
Traditionally, lobectomy was standard for stage IA non-small-cell lung cancer (NSCLC). Recent RCTs suggest sublobar resection's comparable outcomes. Our meta-analysis, incorporating 30 studies (including four RCTs), assessed sublobar resection's efficacy. Employing a random-effects model and I2 statistics for heterogeneity, we found sublobar resection reduced DFS (HR 1.31, p < 0.01) and OS (HR 1.27, p < 0.01) overall. However, RCT subgroup analysis showed no significant differences in DFS (p = 0.28) or OS (p = 0.62). Sublobar resection is a viable option for well-selected patients.
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Affiliation(s)
- Isadora Mamede
- Department of Medicine, Federal University of Sao Joao del-Rei, Divinopolis, Brazil
| | - Leonardo Ribeiro
- Department of Medicine, Pontifical Catholic University of Sao Paulo, São Paulo, Brazil
| | - Carlos Stecca
- Department of Medical Oncology, Mackenzie Evangelical University Hospital, Curitiba, Brazil
| | | | - Marcelo Cypel
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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Wang Y, Li C, Wang Z, Wu R, Li H, Meng Y, Liu H, Song Y. Established the prediction model of early-stage non-small cell lung cancer spread through air spaces (STAS) by radiomics and genomics features. Asia Pac J Clin Oncol 2024. [PMID: 38952146 DOI: 10.1111/ajco.14099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 05/17/2024] [Accepted: 06/11/2024] [Indexed: 07/03/2024]
Abstract
BACKGROUND This study was aimed to establish a prediction model for spread through air spaces (STAS) in early-stage non-small cell lung cancer based on imaging and genomic features. METHODS We retrospectively collected 204 patients (47 STAS+ and 157 STAS-) with non-small cell lung cancer who underwent surgical treatment in the Jinling Hospital from January 2021 to December 2021. Their preoperative CT images, genetic testing data (including next-generation sequencing data from other hospitals), and clinical data were collected. Patients were randomly divided into training and testing cohorts (7:3). RESULTS The study included a total of 204 eligible patients. STAS were found in 47 (23.0%) patients, and no STAS were found in 157 (77.0%) patients. The receiver operating characteristic curve showed that radiomics model, clinical genomics model, and mixed model had good predictive performance (area under the curve [AUC] = 0.85; AUC = 0.70; AUC = 0.85). CONCLUSIONS The prediction model based on radiomics and genomics features has a good prediction performance for STAS.
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Affiliation(s)
- Yimin Wang
- Department of Respiratory Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Chuling Li
- Department of Respiratory Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Zhaofeng Wang
- Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Ranpu Wu
- Department of Respiratory Medicine, Jinling Hospital, Southeast University School of Medicine, Nanjing, China
| | - Huijuan Li
- Department of Respiratory and Critical Care Medicine, The First School of Clinical Medicine, Jinling Hospital, Southern Medical University (Guangzhou), Nanjing, China
| | - Yunchang Meng
- Department of Respiratory Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Hongbing Liu
- Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Yong Song
- Department of Respiratory Medicine, Jinling Hospital, Nanjing Medical University, Nanjing, China
- Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Eguchi T, Matsuoka S, Iwaya M, Kobayashi S, Seshimoto M, Mishima S, Hara D, Kumeda H, Miura K, Hamanaka K, Uehara T, Shimizu K. Improving intraoperative diagnosis of spread through air spaces: A cryo-embedding-medium inflation method for frozen section analysis. JTCVS Tech 2024; 25:170-176. [PMID: 38899076 PMCID: PMC11184482 DOI: 10.1016/j.xjtc.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 06/21/2024] Open
Abstract
Objective Accurate intraoperative diagnosis of spread through air spaces (STAS), a known poor prognostic factor in lung cancer, is crucial for guiding surgical decision-making during sublobar resections. This study aimed to evaluate the diagnostic sensitivity of STAS using frozen section (FS) slides prepared with the cryo-embedding medium inflation technique. Methods In this prospective study at Shinshu University Hospital, 99 patients undergoing lung resection for tumors <3 cm in size were included, a total of 114 lesions. FS slides were prepared with injecting diluted cryo-embedding medium into the lung parenchyma of resected specimens. The diagnostic performance of these FS slides for STAS detection was evaluated by comparing FS-STAS results with the gold-standard STAS status. Results The incidence of STAS, determined by the gold standard, was 43 (38%) of 114 lesions, including 31 (37%) of 84 primary lung cancers and 12 (40%) of 30 metastatic lung tumors. The sensitivity, specificity, positive and negative predictive values, and accuracy of FS slides for STAS detection were 81%, 89%, 81%, 89%, and 86%, respectively. Specifically, in primary lung cancers, these values were 90%, 89%, 82%, 94%, and 89%, respectively. Regarding metastatic lung tumors, the corresponding values were 58%, 89%, 78%, 76%, and 77%, respectively. Conclusions Our adapted cryo-embedding medium inflation method has demonstrated enhanced sensitivity in detecting STAS on FS slides, providing results similar to the gold-standard STAS detection. Compared with historical benchmarks, this technique could show excellent performance and be readily incorporated into clinical practice without requiring additional resources beyond those used for standard FS analysis.
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Affiliation(s)
- Takashi Eguchi
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Shunichiro Matsuoka
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Mai Iwaya
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Shota Kobayashi
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Maho Seshimoto
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Shuji Mishima
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Daisuke Hara
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Hirotaka Kumeda
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Kentaro Miura
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Kazutoshi Hamanaka
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
| | - Takeshi Uehara
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Kimihiro Shimizu
- Division of General Thoracic Surgery, Department of Surgery, Shinshu University Hospital, Matsumoto, Japan
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Tasnim S, Raja S, Mukhopadhyay S, Blackstone EH, Toth AJ, Barron JO, Raymond DP, Bribriesco AC, Schraufnagel DP, Murthy SC, Sudarshan M. Preoperative predictors of spread through air spaces in lung cancer. J Thorac Cardiovasc Surg 2023:S0022-5223(23)01106-6. [PMID: 38006997 DOI: 10.1016/j.jtcvs.2023.11.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 11/09/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
OBJECTIVE Spread through air spaces (STAS) is a new histologic feature of invasion of non-small cell lung cancer that lacks sensitivity and specificity on frozen sections and is associated with higher recurrence and worse survival with sublobar resections. Our objective is to identify preoperative characteristics that are predictive of STAS to guide operative decisions. METHODS From January 2018 through December 2021, 439 cT1-3N0 M0 patients with non-small cell lung cancer and a median age of 68 years, 255 (58%) women, who underwent primary surgery at our institution were included. Patients who received neoadjuvant therapy and whose STAS status was not documented were excluded. Age, sex, smoking status, tumor size, ground-glass opacities, maximum standardized uptake values, and molecular markers on preoperative biopsy were evaluated as preoperative markers. Comparisons between groups were conducted using standardized mean differences and random forest classification was used for prediction modeling. RESULTS Of the 439 patients, 177 had at least 1 STAS-positive tumor, and 262 had no STAS-positive tumors. Overall, 179 STAS tumors and 293 non-STAS tumors were evaluated. Younger age (50 years or younger), solid tumor, size ≥2 cm, and maximum standardized uptake value ≥2.5 were independently predictive of STAS with prediction probabilities of 50%, 40%, 38%, and 40%, respectively. STAS tumors were more likely to harbor KRAS mutations and be PD-L1 negative. CONCLUSIONS Young age (50 years or younger), larger (≥2 cm) solid tumors, high maximum standardized uptake values, and presence of KRAS mutation, are risk factors for STAS and can be considered for lobectomy. Smoking status and gender are still controversial risk factors for STAS.
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Affiliation(s)
- Sadia Tasnim
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Siva Raja
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | | | - Eugene H Blackstone
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Andrew J Toth
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - John O Barron
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Daniel P Raymond
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Alejandro C Bribriesco
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Dean P Schraufnagel
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Sudish C Murthy
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Monisha Sudarshan
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, Cleveland, Ohio.
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Brunelli A, Decaluwe H, Gonzalez M, Gossot D, Petersen RH, Augustin F, Assouad J, Baste JM, Batirel H, Falcoz PE, Almanzar SF, Furak J, Gomez-Hernandez MT, de Antonio DG, Hansen H, Jimenez M, Koryllos A, Meacci E, Opitz I, Pages PB, Piwkowski C, Ruffini E, Schneiter D, Stupnik T, Szanto Z, Thomas P, Toker A, Tosi D, Veronesi G. European Society of Thoracic Surgeons expert consensus recommendations on technical standards of segmentectomy for primary lung cancer. Eur J Cardiothorac Surg 2023; 63:ezad224. [PMID: 37267148 DOI: 10.1093/ejcts/ezad224] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/18/2023] [Accepted: 05/31/2023] [Indexed: 06/04/2023] Open
Affiliation(s)
| | - Herbert Decaluwe
- Department of Thoracic Surgery, University Hospital Leuven, Leuven, Belgium
| | - Michel Gonzalez
- Department of Thoracic Surgery, University Hospital of Lausanne, Lausanne, Switzerland
| | - Dominique Gossot
- Department of Thoracic Surgery, IMM-Curie-Montsouris Thoracic Institute, Paris, France
| | - Rene Horsleben Petersen
- Department of Cardiothoracic Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Florian Augustin
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Jalal Assouad
- Department of Thoracic Surgery. Tenon Hospital, Sorbonne University-Assistance Publique Hôpitaux de Paris, Paris, France
| | - Jean Marc Baste
- Department of Cardio-Thoracic Surgery, University Hospital of Rouen, Rouen, France
| | - Hasan Batirel
- Department of Thoracic Surgery, Faculty of Medicine, Biruni University, Istanbul, Turkey
| | | | | | - Jozsef Furak
- Department of Surgery, University of Szeged, Szeged, Hungary
| | | | - David Gomez de Antonio
- Department of Thoracic Surgery, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - Henrik Hansen
- Department of Cardiothoracic Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Marcelo Jimenez
- Department of Thoracic Surgery, Salamanca University Hospital, Salamanca, Spain
| | - Aris Koryllos
- Department of Thoracic Surgery, Florence Nightingale Hospital, Duesseldorf, Germany
| | - Elisa Meacci
- Department of General Thoracic Surgery, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Catholic University of Sacred Hearth, Rome, Italy
| | - Isabelle Opitz
- Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland
| | | | - Cezary Piwkowski
- Thoracic Surgery Department, Poznan University of Medical Sciences, Poznan, Poland
| | - Enrico Ruffini
- Division of Thoracic Surgery, University of Torino, Turin, Italy
| | - Didier Schneiter
- Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Tomaz Stupnik
- Department of Thoracic Surgery, Ljubljana University Medical Centre, Ljubljana, Slovenia
| | - Zalan Szanto
- Department of Thoracic Surgery, Medical School, University of Pécs, Pécs, Hungary
| | - Pascal Thomas
- Department of Thoracic Surgery, North Hospital, APHM/Aix-Marseille University, Marseille, France
| | - Alper Toker
- Department of Cardiovascular and Thoracic Surgery, West Virginia University, Morgantown, WV, USA
| | - Davide Tosi
- Thoracic Surgery and Lung Transplantation Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giulia Veronesi
- Department of Thoracic Surgery, IRCCS San Raffaele Scientific Institute, and Vita-Salute San Raffaele University, Milan, Italy
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Salvicchi A, Tombelli S, Mugnaini G, Gonfiotti A. Lung Segmentectomy in NSCLC Surgery. Life (Basel) 2023; 13:1284. [PMID: 37374067 DOI: 10.3390/life13061284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 05/28/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Current guidelines recommend surgery for early-stage non-small cell lung cancer (NSCLC). The standard treatment for patients with cT1N0 NSCLC has been lobectomy with lymph-node dissection, with sublobar resection used only in patients with inadequate cardio-respiratory reserve, with poor performance status, or who are elderly. In 1995, the Lung Cancer Study Group published the results of a randomized, prospective trial demonstrating the superiority of lobectomy compared with sublobar resection. From then on, wedge resection and segmentectomy were reserved exclusively for patients with poor functional reserve who could not tolerate lobectomy. Therefore, the exact role of segmentectomy has been controversial over the past 20 years. Recently, the randomized controlled trial JCOG0802/WJOG4607L demonstrated that segmentectomy was superior to lobectomy in patients with stage IA NSCLC (<2 cm and CTR < 0.5) in terms of both overall-survival and post-operative lung function. Based on these results, segmentectomy should be considered the standard surgical procedure for this patient group. In 2023, the randomized phase III CALGB 140503 (Alliance) trial demonstrated the efficacy and non-inferiority of sublobar resection, including wedge resection, for clinical stage IA NSCLC with tumor diameter of < 2 cm. This article is a narrative review of the current role of segmentectomy in lung cancer treatment and summarizes the most relevant studies in this context.
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Affiliation(s)
- Alberto Salvicchi
- Thoracic Surgery Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Simone Tombelli
- Thoracic Surgery Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Giovanni Mugnaini
- Thoracic Surgery Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Alessandro Gonfiotti
- Thoracic Surgery Unit, Careggi University Hospital, 50134 Florence, Italy
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
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Li Z, Xu W, Pan X, Wu W, Chen L. Segmentectomy versus lobectomy for small-sized pure solid non-small cell lung cancer. Thorac Cancer 2023; 14:1021-1028. [PMID: 36882365 PMCID: PMC10101834 DOI: 10.1111/1759-7714.14840] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND Segmentectomy has been recommended for ground glass opacity (GGO)-dominant small-sized non-small cell lung cancer (NSCLC) or those with GGO component. Pure solid NSCLC is a special sub-type and has an inferior prognosis. Whether segmentectomy could achieve comparable long-term outcomes with lobectomy for pure solid small-sized NSCLC remained controversial. This study aimed to compare the prognosis of segmentectomy and lobectomy for pure solid NSCLC. METHODS NSCLC patients with a pure solid nodule (≤2 cm) who received segmentectomy or lobectomy between January 2010 and June 2019 were retrospectively screened. Log-rank test, univariable, and multivariable Cox regression analyses were used for prognostic comparison. Further, the propensity score matching analysis was adopted to yield a matched cohort. RESULTS After screening, 344 pure solid NSCLC patients with a median follow-up time of 56 months were reserved. Among them, 98 patients underwent segmentectomy and the other 246 subjects received lobectomy. The lobectomy group had a larger tumor size, a higher rate of lymph node metastasis than the segmentectomy arm. Generally, patients with segmentectomy had a better disease-free survival (DFS) (p = 0.011) and overall survival (OS) (p = 0.028) than those with lobectomy. However, the multivariable Cox regression analysis indicated that no significant survival difference existed between segmentectomy and lobectomy after adjusting the potential confounding factors (DFS: hazard ratio [HR], 0.72; 95% confidence interval [CI], 0.30-1.77, p = 0.476; OS: HR, 0.36; 95% CI, 0.08-1.59, p = 0.178). Consistently, in the propensity score matched cohort, segmentectomy (n = 74) yielded similar DFS (p = 0.960) and OS (p = 0.320) with lobectomy (n = 74). CONCLUSIONS Segmentectomy could achieve comparable oncological outcomes with lobectomy for pure solid small-sized NSCLC.
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Affiliation(s)
- Zhihua Li
- Department of Thoracic Surgery, Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Wenzheng Xu
- Department of Thoracic Surgery, Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Xianglong Pan
- Department of Thoracic Surgery, Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Weibing Wu
- Department of Thoracic Surgery, Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Lian Chen
- Department of Thoracic Surgery, Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
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[A Review on Pathological High-risk Factors and Postoperative Adjuvant Chemotherapy in Stage IA Lung Adenocarcinoma]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2022; 25:593-600. [PMID: 36002196 PMCID: PMC9411958 DOI: 10.3779/j.issn.1009-3419.2022.101.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The survival rate needs to be improved in early stage non-small cell lung cancer patients. The risk of recurrence is relatively high in invasive adenocarcinoma patients with a solid or micropapillary component, lymphovascular invasion or tumor spread through air spaces. Systemic treatment options including radical surgical resection should be explored for this population. Adjuvant chemotherapy is not recommended for patients in stage IA in current guidelines. This article is a review on the research progress of the above pathological high-risk factors and the role of adjuvant chemotherapy in patients with pathological high-risk factors in stage IA lung adenocarcinoma.
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Zombori-Tóth N, Paróczai D, Lantos J, Almási S, Sejben A, Tiszlavicz L, Cserni G, Furák J, Zombori T. The More Extensive the Spread through Air Spaces, the Worse the Prognosis Is: Semi-Quantitative Evaluation of Spread through Air Spaces in Pulmonary Adenocarcinomas. Pathobiology 2022; 90:104-113. [PMID: 35947971 PMCID: PMC10129026 DOI: 10.1159/000525456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/09/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The extent of spread through air spaces (STAS) is less investigated among patients with lung adenocarcinoma who underwent sublobar resection. Therefore, we aimed to evaluate the extent of STAS semi-quantitatively, to assess its prognostic impact on overall survival (OS) and recurrence-free survival (RFS), and to investigate the reproducibility of this assessment. METHODS The number of tumour cell clusters and single tumour cells within air spaces was recorded in three different most prominent areas (200x field of view). The extent of STAS was categorized into three groups, and the presence of free tumour cluster (FTC) was recorded. RESULTS Sixty-one patients were included. Recurrence was more frequent with higher grade (p = 0.003), presence of lymphovascular invasion (p = 0.027), and presence of STAS of any extent (p = 0.007). In multivariate analysis, presence of FTC (HR: 5.89; 95% CI: 1.63-21.26; p = 0.005) and more pronounced STAS (HR: 7.46; 95% CI: 1.60-34.6; p = 0.01) had adverse impact on OS and RFS, respectively. Concerning reproducibility, excellent agreement was found among STAS parameters (ICC range: 0.92-0.94). DISCUSSION More extensive STAS is an unfavourable prognostic factor in adenocarcinomas treated with sublobar resection. As the evaluation of extent of STAS is reproducible, further investigation is required to gather more evidence.
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Affiliation(s)
| | - Dóra Paróczai
- Csongrád-Csanád County Hospital of Chest Diseases, Deszk, Hungary
| | - Judit Lantos
- Department of Neurology, Bács-Kiskun County Teaching Hospital, Kecskemét, Hungary
| | - Szintia Almási
- Department of Pathology, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Anita Sejben
- Department of Pathology, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - László Tiszlavicz
- Department of Pathology, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Gábor Cserni
- Department of Pathology, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary.,Department of Pathology, Bács-Kiskun County Teaching Hospital, Kecskemét, Hungary
| | - József Furák
- Department of Surgery, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Tamás Zombori
- Department of Pathology, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
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