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Background: Spread through air spaces (STAS) has been identified as an invasion pattern in non–small cell lung cancer (NSCLC). This study evaluated the association between tumor STAS and various clinicopathological parameters of NSCLC, with emphasis on the prognostic role of STAS. Methods: We evaluated 96 cases of NSCLC for STAS. STAS-positive cases were graded according to the distance between the edge of the primary tumor and the furthest STAS, in millimeters, or the number of alveoli separating STAS from the tumor. Results: STAS was observed in 33 patients (34.4%). In 28 cases, STAS was located in airspaces >3 alveoli away from the primary tumor. In 18 cases, STAS was found in airspaces > 2.5 mm away from the edge of the primary tumor. Morphologically, 18 cases of STAS demonstrated a solid nest pattern, eight showed a micropapillary cluster pattern, and seven exhibited a single-cell pattern. In multivariate analysis, only high tumor grade (p = .001) was independently associated with STAS in NSCLC. The presence of STAS (p = .047), lymphovascular invasion (p = .001), positive surgical margin (p = .021), adenocarcinoma histology (p = .020), and postoperative therapy (p = .049) showed a statistically significant lower overall survival (OS). However, multivariate analyses showed that STAS is not an independent predictor of OS in NSCLC. In addition, STAS-positive cases with an extension of >2.5 mm had significantly lower disease-free survival (DFS) (p = .018). Conclusions: The findings demonstrated that STAS is independently associated with a higher tumor grade and appears to have an adverse impact on OS and DFS in the examined subpopulation.

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기사명 저자명 페이지 원문 목차
(A) comprehensive review of ossifying fibromyxoid tumor : insights into its clinical, pathological, and molecular landscape Kyriakos Chatzopoulos, Antonia Syrnioti, Mohamed Yakoub, Konstantinos Linos p. 6-19
Solitary fibrous tumor : an updated review Joon Hyuk Choi p. 20-46
Clinicopathological and molecular mechanisms of CLDN18.2 in gastric cancer aggressiveness : a high-risk population study with multi-omics profiling Hengquan Wu, Mei Li, Gang Wang, Peiqing Liao, Peng Zhang, Luxi Yang, Yumin Li, Tao Liu, Wenting He p. 47-57
(The) significance of papillary architecture in the follow-up biopsies of patients with progestin-treated atypical endometrial hyperplasia Wangpan J. Shi, Oluwole Fadare p. 58-68
Significance of KM55 immunohistochemical staining in the diagnosis and prognosis of IgA nephropathy Hoe In Jeong, Beom Jin Lim, Minsun Jung p. 69-82
Revisiting human sparganosis : a pathologic review from a single institution Jeemin Yim, Young A Kim, Jeong Hwan Park, Hye Eun Park, Hyun Beom Song, Ji Eun Kim p. 83-91
Correlations and prognostic impacts of tumor spread through airspaces in surgically resected non–small cell lung cancer : a retrospective study from Jordan Ola Abu Al Karsaneh, Amani Al-Rousan, Sofian Al Shboul, Mohammed El-Sadoni, Anas Hayajneh, Moath Alrjoub, Sura Al-Rawabdeh, Tareq Saleh p. 92-106
PSMA expression in hepatic colorectal cancer metastasis Eundong Park, Michel Kmeid, Xin Wang, Haiyan Qiu, Clifton G. Fulmer, Marcello P. Toscano, Nusret Bekir Subasi, Maciej Gracz, Hwajeong Lee p. 107-123
Drug-induced phospholipidosis of the kidney suspected to be caused by atomoxetine Sung-Eun Choi, Kee Hyuck Kim, Minsun Jung, Jeong Hae Kie p. 124-128

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