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Jia C, Jiang HC, Liu C, Wang YF, Zhao HY, Wang Q, Xue XQ, Li XF. The correlation between tumor radiological features and spread through air spaces in peripheral stage IA lung adenocarcinoma: a propensity score-matched analysis. J Cardiothorac Surg 2024; 19:19. [PMID: 38263158 PMCID: PMC10804508 DOI: 10.1186/s13019-024-02498-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 01/14/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND The consolidation tumor ratio (CTR) is a predictor of invasiveness in peripheral T1N0M0 lung adenocarcinoma. However, its association with spread through air spaces (STAS) remains largely unexplored. We aimed to explore the correlation between the CTR of primary tumors and STAS in peripheral T1N0M0 lung adenocarcinoma. METHODS We collected data from patients who underwent surgery for malignant lung neoplasms between January and November 2022. Univariate and multivariate analyses following propensity-score matching with sex, age, BMI, were performed to identify the independent risk factors for STAS. The incidence of STAS was compared based on pulmonary nodule type. A smooth fitting curve between CTR and STAS was produced by the generalized additive model (GAM) and a multiple regression model was established using CTR and STAS to determine the dose-response relationship and calculate the odds ratio (OR) and 95% confidence interval (CI). RESULTS 17 (14.5%) were diagnosed with STAS. The univariate analysis demonstrated that the history of the diabetes, size of solid components, spiculation, pleural indentation, pulmonary nodule type, consolidation/tumor ratio of the primary tumor were statistically significant between the STAS-positive and STAS-negative groups following propensity-score matching(p = 0.047, 0.049, 0.030, 0.006, 0.026, and < 0.001, respectively), and multivariate analysis showed that the pleural indentation was independent risk factors for STAS (with p-value and 95% CI of 0.043, (8.543-68.222)). Moreover, the incidence of STAS in the partially solid nodule was significantly different from that in the solid nodule and ground-glass nodule (Pearson Chi-Square = 7.49, p = 0.024). Finally, the smooth fitting curve showed that CTR tended to be linearly associated with STAS by GAM, and the multivariate regression model based on CTR showed an OR value of 1.24 and a p-value of 0.015. CONCLUSIONS In peripheral stage IA lung adenocarcinoma, the risk of STAS was increased with the solid component of the primary tumor. The pleural indentation of the primary tumor could be used as a predictor in evaluating the risk of the STAS.
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Affiliation(s)
- Chao Jia
- Department of Radiology, The Xuzhou Hospital Affiliated to Jiangsu University, Xu Zhou, Jiang Su, 221004, People's Republic of China
| | - Hai-Cheng Jiang
- Department of Thoracic Surgery, Xuzhou Cancer Hospital, Xuzhou, 221000, People's Republic of China
| | - Cong Liu
- Department of Puncture Minimally Invasive, Xuzhou New Health Hospital, Xuzhou, 221000, People's Republic of China
- Department of Minimally Invasive Oncology, Xuzhou New Health Hospital, Xuzhou, 221000, People's Republic of China
| | - Yu-Feng Wang
- Department of Nuclear Medicine, Xuzhou Cancer Hospital, Xuzhou, 221000, People's Republic of China
| | - Hong-Ying Zhao
- Department of Medical Oncology, Xuzhou Cancer Hospital, Xuzhou, 221000, People's Republic of China
| | - Qiang Wang
- Department of Radiotherapy, Xuzhou Cancer Hospital, Xuzhou, 221000, People's Republic of China
| | - Xiu-Qing Xue
- Department of Nuclear Medicine, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First People's Hospital of Yancheng, Yancheng, 224005, People's Republic of China.
| | - Xiao-Feng Li
- Department of Radiology, The Xuzhou Hospital Affiliated to Jiangsu University, Xu Zhou, Jiang Su, 221004, People's Republic of China.
- Department of Radiology, Xuzhou Cancer Hospital, Xuzhou, 221000, People's Republic of China.
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Ding Y, Zhao S, Liu X, Ren J, Li J, Zhang W, Xu M, Sun D. The value of frozen section diagnosis of tumor spread through air spaces in small-sized (≤ 2 cm) non-small cell lung cancer. World J Surg Oncol 2023; 21:195. [PMID: 37394469 DOI: 10.1186/s12957-023-03092-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023] Open
Abstract
BACKGROUND The current accuracy of frozen section diagnosis of tumor spread through air spaces (STAS) in non-small cell lung cancer (NSCLC) is poor. However, the accuracy and prognostic value of STAS assessment on frozen sections in small-sized NSCLC (diameter ≤ 2 cm) is unknown. METHODS Three hundred fifty-two patients with clinical stage I NSCLC (≤ 2 cm) were included, of which the paraffin sections and frozen sections were reviewed. The accuracy of STAS diagnosis in frozen sections was assessed using paraffin sections as the gold standard. The relationship between STAS on frozen sections and prognosis was assessed by the Kaplan-Meier method and log-rank tests. RESULTS STAS on frozen sections in 58 of 352 patients could not be evaluated. In the other 294 patients, 36.39% (107/294) was STAS-positive on paraffin sections and 29.59% (87/294) on frozen sections. The accuracy of frozen section diagnosis of STAS was 74.14% (218/294), sensitivity was 55.14% (59/107), specificity was 85.02% (159/187) and agreement was moderate (K = 0.418). In subgroup analysis, the Kappa values for frozen section diagnosis of STAS in the consolidation-to-tumor ratio (CTR) ≤ 0.5 group and CTR > 0.5 group were 0.368, 0.415, respectively. In survival analysis, STAS-positive frozen sections were associated with worse recurrence-free survival in the CTR > 0.5 group (P < 0.05). CONCLUSIONS The moderate accuracy and prognostic significance of frozen section diagnosis of STAS in clinical stage I NSCLC (≤ 2 cm in diameter; CTR > 0.5) suggests that frozen section assessment of STAS can be applied to the treatment strategy of small-sized NSCLC with CTR > 0.5.
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Affiliation(s)
- Yun Ding
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
| | - Shutong Zhao
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
- Department of Pathology, Tianjin Chest Hospital (Affiliated Hospital of Tianjin University), No. 261, Taierzhuang South Road, Jinnan District, Tianjin, 300222, China
| | - Xin Liu
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
| | - Jie Ren
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
- Department of Thoracic Surgery, Tianjin Jinnan Hospital, Tianjin, China
| | - Jiuzhen Li
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
| | - Weiran Zhang
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
- Department of Thoracic Surgery, Tianjin Chest Hospital (Affiliated Hospital of Tianjin University), No. 261, Taierzhuang South Road, Jinnan District, Tianjin, 300222, China
| | - Meilin Xu
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China.
- Department of Pathology, Tianjin Chest Hospital (Affiliated Hospital of Tianjin University), No. 261, Taierzhuang South Road, Jinnan District, Tianjin, 300222, China.
| | - Daqiang Sun
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China.
- Department of Thoracic Surgery, Tianjin Chest Hospital (Affiliated Hospital of Tianjin University), No. 261, Taierzhuang South Road, Jinnan District, Tianjin, 300222, China.
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Ding Y, Li J, Li X, Xu M, Geng H, Sun D. Impact of preoperative biopsy on tumor spread through air spaces in stage I non-small cell lung cancer: a propensity score-matched study. BMC Pulm Med 2022; 22:293. [PMID: 35907818 PMCID: PMC9339177 DOI: 10.1186/s12890-022-02090-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Percutaneous needle biopsy (PNB) and bronchoscopic biopsy (BB) are widely used in the preoperative diagnosis of pulmonary nodules, but whether PNB or BB may cause tumor spread through air spaces (STAS) has not been reported. Methods 433 postoperative patients with pathological stage I non-small cell lung cancer (NSCLC) from January 2015 to December 2018 at our hospital were enrolled and divided into PNB group (n = 40), BB group (n = 48) and non-biopsy group (n = 345). The PNB and BB groups were matched using propensity score matched (PSM) separately from the non-biopsy group, after which the effects of PNB and BB on STAS, recurrence-free survival (RFS) and overall survival (OS) were assessed. Results After PSM for 9 confounding factors (gender, age, smoking history, tumor site, scope of surgery, pathology type, stage, maximum tumor diameter and postoperative treatment), 38 cases in the PNB group were successfully matched with 38 cases in the non-biopsy group and 28 cases in the BB group were successfully matched with 28 cases in the non-biopsy group. After PSM, there was no significant difference in the incidence of STAS between the PNB and non-biopsy groups (42.1% vs. 34.2%, P > 0.05) and between the BB and non-biopsy groups (42.9% vs. 46.4%, P > 0.05). The results after PSM showed no significant effect of both PNB and BB on RFS and OS after radical surgery (P > 0.05). Conclusion Preoperative biopsy in patients with stage I NSCLC has not been shown to increase the occurrence of STAS, nor postoperative recurrence and death.
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Affiliation(s)
- Yun Ding
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
| | - Jiuzhen Li
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China
| | - Xin Li
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China.,Department of Thoracic Surgery, Tianjin Chest Hospital, Tianjin, China
| | - Meilin Xu
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China.,Department of Pathology, Tianjin Chest Hospital, Tianjin, China
| | - Hua Geng
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China.,Department of Pathology, Tianjin Chest Hospital, Tianjin, China
| | - Daqiang Sun
- Clinical School of Thoracic, Tianjin Medical University, Tianjin, China. .,Department of Thoracic Surgery, Tianjin Chest Hospital, Tianjin, China.
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Chen S, Ye T, Yang S, Zhao Y, Zhang Y, Huang Q, Wu H, Hu H, Sun Y, Zhang Y, Xiang J, Wang S, Gu Y, Jin Y, Li Y, Chen H. Prognostic implication of tumor spread through air spaces in patients with pathologic N0 lung adenocarcinoma. Lung Cancer 2021; 164:33-38. [PMID: 34974223 DOI: 10.1016/j.lungcan.2021.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/06/2021] [Accepted: 12/18/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Tumor spread through air spaces (STAS) has been identified as an invasive pattern in lung adenocarcinoma (ADC), but the prognostic implication of STAS has not been well studied in patients with pathologic N0 lung ADC. The purpose of this study was to evaluate the prognostic implication of STAS in pathologic N0 lung ADC patients after radical surgery. MATERIALS AND METHODS Between January 2017 and December 2018, 796 patients with completely resected pathologic N0 lung ADC were reviewed. Pearson's chi-square test or Fisher exact test was used for comparing the relationship between STAS and clinicopathological features. The log-rank test and multivariate Cox regression models were used to explore prognostic factors. RESULTS Among the 796 patients, STAS was positive in 201 patients (25.3%). The presence of STAS was significantly associated with patients with solid nodules (P < 0.001), micropapillary pattern-predominant adenocarcinoma/solid pattern-predominant adenocarcinoma (P < 0.001), larger tumor size (P < 0.001), visceral pleural invasion (P < 0.001) and lymphovascular invasion (P < 0.001). Multivariable analysis showed that STAS was an independent prognostic factor for recurrence-free survival (RFS) in pathologic N0 lung ADC patients (P = 0.014). For patients with acinar pattern-predominant adenocarcinoma (APA) / papillary pattern-predominant adenocarcinoma (PPA) / invasive mucinous adenocarcinoma (IMA) and patients who underwent lobectomy, STAS was an independent prognostic factor for RFS (P = 0.015, P = 0.011; respectively) and overall survival (OS) (P = 0.038, P = 0.020; respectively). CONCLUSION In this study, STAS was an independent prognostic factor for RFS in pathologic N0 lung adenocarcinomas, and it was also an independent prognostic factor for RFS and OS in patients with APA/PPA/IMA and those who received lobectomy.
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Affiliation(s)
- Shiqi Chen
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ting Ye
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Siqian Yang
- School of Life Sciences, Fudan University, Shanghai 200032, China
| | - Yue Zhao
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yang Zhang
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Qingyuan Huang
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Haoxuan Wu
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Hong Hu
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yihua Sun
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yawei Zhang
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jiaqing Xiang
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Shengping Wang
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Yajia Gu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Yan Jin
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Yuan Li
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Haiquan Chen
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; School of Life Sciences, Fudan University, Shanghai 200032, China; Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, 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: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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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 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] [What about the content of this article? (0)] [Affiliation(s)] [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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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: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Uruga H, Fujii T, Fujimori S, Kohno T, Kishi K. Semiquantitative Assessment of Tumor Spread through Air Spaces (STAS) in Early-Stage Lung Adenocarcinomas. J Thorac Oncol 2017; 12:1046-1051. [PMID: 28363628 DOI: 10.1016/j.jtho.2017.03.019] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/11/2017] [Accepted: 03/21/2017] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Tumor spread through air spaces (STAS) has recently been reported as a form of tumor invasion having an unfavorable prognosis, but the significance of a small amount of STAS is not known. The aim of this study was to perform a semiquantitative assessment of STAS. METHODS Small (≤2 cm) stage I lung adenocarcinomas surgically resected at our institution between 2003 and 2009 were assessed semiquantitatively in the most prominent area as no STAS, low STAS (1-4 single cells or clusters of STAS), or high STAS (≥5 single cells or clusters of STAS) by using a 20× objective and a 10× ocular lens. A statistical analysis was performed to determine the impact of clinicopathologic parameters on STAS and to clarify the relationship between STAS and patient survival. RESULTS STAS was assessed as no STAS in 109 of 208 cases (52.4%), as low STAS in 38 cases (18.3%), and as high STAS in 61 cases (29.3%). There were statistically significant associations between higher STAS and solid predominant invasive adenocarcinoma (p < 0.001), pleural invasion (p < 0.001), lymphatic invasion (p < 0.001), vascular invasion (p < 0.001), and tumor size of 10 mm or more (p = 0.037). There was a significant association between increasing STAS and shorter recurrence-free survival (RFS) in univariate analysis (no STAS, 154.2 months; low STAS, 147.6 months; and high STAS, 115.6 months). In a multivariate Cox proportional hazards model, only STAS (p = 0.015) remained a significant predictor of RFS. CONCLUSIONS We found that one-third of resected small adenocarcinomas had high STAS. Higher STAS was predictive of worse RFS.
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Affiliation(s)
- Hironori Uruga
- Department of Respiratory Medicine, Respiratory Center, Toranomon Hospital, Tokyo, Japan; Department of Diagnostic Pathology, Toranomon Hospital, Tokyo, Japan; Okinaka Memorial Institute for Medical Research, Tokyo, Japan.
| | - Takeshi Fujii
- Department of Diagnostic Pathology, Toranomon Hospital, Tokyo, Japan; Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - Sakashi Fujimori
- Department of Thoracic Surgery, Respiratory Center, Toranomon Hospital, Tokyo, Japan
| | - Tadasu Kohno
- Department of Thoracic Surgery, Respiratory Center, Toranomon Hospital, Tokyo, Japan
| | - Kazuma Kishi
- Department of Respiratory Medicine, Respiratory Center, Toranomon Hospital, Tokyo, Japan; Okinaka Memorial Institute for Medical Research, Tokyo, Japan
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