Article ; Online: The International Association for the Study of Lung Cancer Thymic Epithelial Tumors Staging Project: Proposals for the N and the M Components for the Forthcoming (Ninth) Edition of the TNM Classification of Malignant Tumors.
2023 Volume 19, Issue 1, Page(s) 52–70
Abstract: ... with cancer and rests on a combination of three components-T for tumor extent, N for nodal involvement, and M ... for distant metastases. This article details the revision of the N and the M components of thymic epithelial ... The N and M components of the eighth edition staging system were verified by a large international ...
Abstract | Introduction: Stage classification is an important underpinning of management in patients with cancer and rests on a combination of three components-T for tumor extent, N for nodal involvement, and M for distant metastases. This article details the revision of the N and the M components of thymic epithelial tumors for the ninth edition of the TNM classification of malignant tumors proposed by the Thymic Domain of the International Association for the Study of Lung Cancer Staging and Prognostic Factors Committee. Methods: The N and M components of the eighth edition staging system were verified by a large international collaborative data source through a data-driven analysis. A total of 9147 cases were included for analysis, including 7662 thymomas, 1345 thymic carcinomas, and 140 neuroendocrine thymic tumors. Results: Lymph node involvement rates were 1.5% in thymomas and 17.6% and 27.7% in thymic carcinomas and neuroendocrine thymic tumors, respectively. Rates of lymph node metastasis were increasingly higher in tumors with higher T stage and higher-grade histologic type. Survival analysis validated the differences in the N and M categories proposed in the eighth edition staging system. Good discrimination in overall survival was detected among pathologic (p)N and pM categories in patients with thymoma and thymic carcinoma. Conclusions: No changes are proposed from the eighth edition for the N and M components. The proposed stage classification will provide a useful tool for management of the disease among the global thymic community. |
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MeSH term(s) | Humans ; Neoplasm Staging ; Lung Neoplasms/pathology ; Thymoma/pathology ; Myeloma Proteins ; Thymus Neoplasms/pathology ; Prognosis ; Neoplasms, Glandular and Epithelial/pathology ; Neuroendocrine Tumors/pathology |
Chemical Substances | Myeloma Proteins |
Language | English |
Publishing date | 2023-09-27 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 2432037-7 |
ISSN | 1556-1380 ; 1556-0864 |
ISSN (online) | 1556-1380 |
ISSN | 1556-0864 |
DOI | 10.1016/j.jtho.2023.09.1447 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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