Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?

Abstract Background Thymoma is a type of rare mediastinal tumor whose clinical characteristics and indicators of prognosis are poorly understood. This single‐institution retrospective study aimed to assess the predictive value of tumor, node, metastasis (TNM) staging incorporating tumor size in pred...

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Main Authors: Yen‐Chiang Tseng, Han‐Shui Hsu, Yi‐Hsuan Lin, Yen‐Han Tseng, Chih‐Wen Shu, Yih‐Gang Goan, Ching‐Jiunn Tseng
Format: Article
Language:English
Published: Wiley 2022-02-01
Series:Thoracic Cancer
Subjects:
Online Access:https://doi.org/10.1111/1759-7714.14255
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author Yen‐Chiang Tseng
Han‐Shui Hsu
Yi‐Hsuan Lin
Yen‐Han Tseng
Chih‐Wen Shu
Yih‐Gang Goan
Ching‐Jiunn Tseng
author_facet Yen‐Chiang Tseng
Han‐Shui Hsu
Yi‐Hsuan Lin
Yen‐Han Tseng
Chih‐Wen Shu
Yih‐Gang Goan
Ching‐Jiunn Tseng
author_sort Yen‐Chiang Tseng
collection DOAJ
description Abstract Background Thymoma is a type of rare mediastinal tumor whose clinical characteristics and indicators of prognosis are poorly understood. This single‐institution retrospective study aimed to assess the predictive value of tumor, node, metastasis (TNM) staging incorporating tumor size in predicting the risk of thymoma recurrence after resection. Methods Four binary logistic regression models were developed. Models I and II included median tumor size and TNM stage, respectively. Model III included the above two variables. Model IV was model III containing these two variables and their interaction terms. All models were adjusted for WHO histological type, operational time, and adjuvant therapy. Results A total of 276 patients with a median age of 51.0, including 21 patients with thymoma recurrence, were included in this study. Models II or III showed a lower ‐2LogL and higher AUC (0.735 and 0.738 vs. 0.576) with significantly better discrimination than model I, and model III and model II shared similar discrimination. In model III, TNM stage was positively correlated with thymoma recurrence. The recurrence risk of patients with TNM stage IV was significantly higher than those with TNM stage I (OR of 11.03, p = 0.022). No significant correlation between the tumor size and recurrence risk (p = 0.779) and no interaction was found between medium tumor size and TNM stage in model IV. Conclusions This study suggests that the prediction contribution of the TNM stage combined with tumor size is similar to the TNM stage alone for tumor recurrence in patients with thymoma after surgical resection.
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spelling doaj.art-eabbe20f7d884ac2841378c7c2a58be72022-12-22T04:14:58ZengWileyThoracic Cancer1759-77061759-77142022-02-0113334635210.1111/1759-7714.14255Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?Yen‐Chiang Tseng0Han‐Shui Hsu1Yi‐Hsuan Lin2Yen‐Han Tseng3Chih‐Wen Shu4Yih‐Gang Goan5Ching‐Jiunn Tseng6Division of Thoracic Surgery, Department of Surgery Kaohsiung Veterans General Hospital Kaohsiung TaiwanDivision of Thoracic Surgery, Department of Surgery Taipei Veterans General Hospital Taipei TaiwanDepartment of Family Medicine, School of Medicine National Yang‐Ming University Taipei TaiwanSchool of Medicine, National Yang‐Ming University Taipei TaiwanInstitute of Biopharmaceutical Sciences, National Sun Yat‐Sen University Kaohsiung TaiwanDivision of Thoracic Surgery, Department of Surgery Kaohsiung Veterans General Hospital Kaohsiung TaiwanInstitute of Clinical Medicine, National Yang‐Ming University Taipei TaiwanAbstract Background Thymoma is a type of rare mediastinal tumor whose clinical characteristics and indicators of prognosis are poorly understood. This single‐institution retrospective study aimed to assess the predictive value of tumor, node, metastasis (TNM) staging incorporating tumor size in predicting the risk of thymoma recurrence after resection. Methods Four binary logistic regression models were developed. Models I and II included median tumor size and TNM stage, respectively. Model III included the above two variables. Model IV was model III containing these two variables and their interaction terms. All models were adjusted for WHO histological type, operational time, and adjuvant therapy. Results A total of 276 patients with a median age of 51.0, including 21 patients with thymoma recurrence, were included in this study. Models II or III showed a lower ‐2LogL and higher AUC (0.735 and 0.738 vs. 0.576) with significantly better discrimination than model I, and model III and model II shared similar discrimination. In model III, TNM stage was positively correlated with thymoma recurrence. The recurrence risk of patients with TNM stage IV was significantly higher than those with TNM stage I (OR of 11.03, p = 0.022). No significant correlation between the tumor size and recurrence risk (p = 0.779) and no interaction was found between medium tumor size and TNM stage in model IV. Conclusions This study suggests that the prediction contribution of the TNM stage combined with tumor size is similar to the TNM stage alone for tumor recurrence in patients with thymoma after surgical resection.https://doi.org/10.1111/1759-7714.14255thymomaTNM staging systemtumor size
spellingShingle Yen‐Chiang Tseng
Han‐Shui Hsu
Yi‐Hsuan Lin
Yen‐Han Tseng
Chih‐Wen Shu
Yih‐Gang Goan
Ching‐Jiunn Tseng
Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
Thoracic Cancer
thymoma
TNM staging system
tumor size
title Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
title_full Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
title_fullStr Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
title_full_unstemmed Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
title_short Does size affect the prognosis of resectable thymoma beyond the eighth edition TNM?
title_sort does size affect the prognosis of resectable thymoma beyond the eighth edition tnm
topic thymoma
TNM staging system
tumor size
url https://doi.org/10.1111/1759-7714.14255
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