Comparative evaluation of TNM staging systems (eighth vs. ninth edition) for the non-surgical treatment of localized and locally advanced anal squamous cell carcinoma: Prognostic significance of T classification and lymph node status

Aihong Zheng, Hong’en Xu, Yiming Tao, Bingchen Chen, Jieni Ding, Tao Song and Yanwei Lu

PLOS ONE, 2025, vol. 20, issue 1, 1-14

Abstract: This study aims to compare the survival discrimination of the Tumor-Node-Metastasis (TNM) eighth and ninth editions for patients with localized and locally advanced (LLA) anal squamous cell carcinoma (ASCC) treated non-surgically and to evaluate the prognostic impact of T classification and lymph node (LN) status with data from the Surveillance, Epidemiology, and End Results database. We retrospectively included 6,876 patients in the comparison. We observed the inversion of survival outcomes for stages IIB and IIIA diseases in the TNM eighth edition [median overall survival (OS): 112 months for stage IIB vs. not reached for stage IIIA]. By contrast, it demonstrated improvement in the TNM ninth edition (median OS: not reached for IIB disease vs. 120 months for IIIA disease, P

Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0317598

DOI: 10.1371/journal.pone.0317598

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