1. Pathological Assessment of the AJCC Tumor Regression Grading System After Preoperative Chemoradiotherapy for Chinese Locally Advanced Rectal Cancer
- Author
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Yuanhong Gao, Weiwei Xiao, Kai-Yun You, Pu-Yun OuYang, Zhizhong Pan, Huizhong Zhang, Zhi-Fan Zeng, Lu-Ning Zhang, Rui-Hua Xu, Pei-Rong Ding, and Shaoyan Xi
- Subjects
Adult ,Male ,medicine.medical_specialty ,Colorectal cancer ,Pathological staging ,Observational Study ,Preoperative care ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Asian People ,Internal medicine ,Preoperative Care ,medicine ,Humans ,Pathological ,Survival analysis ,Aged ,Neoplasm Staging ,Retrospective Studies ,Proportional hazards model ,business.industry ,Rectal Neoplasms ,Remission Induction ,Retrospective cohort study ,General Medicine ,Chemoradiotherapy ,Middle Aged ,medicine.disease ,Prognosis ,Survival Analysis ,Surgery ,Treatment Outcome ,030220 oncology & carcinogenesis ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,030211 gastroenterology & hepatology ,Female ,Neoplasm Grading ,business ,Follow-Up Studies ,Research Article - Abstract
Supplemental Digital Content is available in the text, We used American Joint Committee on Cancer (AJCC) Staging Manual system to assess the prognostic significance of tumor regression grading (TRG) for locally advanced rectal cancer (LARC) (T3/4 or N+) patients who were treated with preoperative chemoradiotherapy (CRT). The 4 AJCC-TRG classifications were evaluated on surgical specimens from 295 LARC patients receiving CRT. Overall survival (OS), disease-free survival (DFS), local recurrence-free survival (LRFS), and distant metastasis-free survival (DMFS) were estimated using Kaplan–Meier method and Cox regression model. Classifications of TRG 0, 1, 2, and 3 were found in 27.5%, 19.3%, 45.7%, and 7.5% of the resected specimens, respectively. Three-year OS was 95.5% for TRG0, 91.5% for TRG1, 84.8% for TRG2, and 85.7% for TRG3 (P = 0.035). Three-year DFS was 89.0% for TRG0, 74.4% for TRG1, 70.9% for TRG2, and 62% for TRG3 (P = 0.018). By multivariate analysis, AJCC-TRG (P = 0.033), residual lymph node metastasis (ypN+) (P
- Published
- 2016