OGAWA Shimpei
   Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine
   Position   Associate Professor
Article types Original article
Language English
Peer review Non peer reviewed
Title Stage II colon cancer staging using the number of retrieved lymph nodes may be superior to current TNM staging for prognosis stratification: the Japanese study group for postoperative follow-up of colorectal cancer.
Journal Formal name：International journal of colorectal disease
Abbreviation：Int J Colorectal Dis
ISSN code：14321262/01791958
Domestic / ForeginForegin
Volume, Issue, Page 36(10),pp.2205-2214
Author and coauthor OGAWA Shimpei†, ITABASHI Michio, BAMBA Yoshiko, TANI Kimitaka, YAMAGUCHI SHIGEKI, YAMAUCHI Shinichi, SUGIHARA Kenichi
Authorship Lead author
Publication date 2021/10
Summary PURPOSE:The purpose of the study was to compare staging of stage II colon cancer using the number of retrieved lymph nodes (RN) to current TNM staging for stratification of prognosis.METHODS:The subjects were 6307 patients with stage II colon cancer who underwent curative resection at 24 Japanese institutions. The cutoff for the number of RN was established using Akaike information criterion (AIC) values for relapse-free survival (RFS) and overall survival (OS). Comparison of survival using TNM and T + RN (TRN) staging was performed using a Cox proportional hazards regression model.RESULTS:AIC was lowest for 14 retrieved lymph nodes for RFS and OS. This number was used as the cutoff. In multivariate analysis, age (≥ 69), male gender, V1, CEA (> 5), pT (T4a, T4b), and RN-L were independent factors associated with RFS and OS. Six combinations of pT and RN categories were used to establish three subgroups: TRN stages IIA, IIB, and IIC. The 5-year RFS was 83.9%, 72.3%, and 71.8% in TNM stages IIA, IIB, and IIC; and 86.0%, 76.9%, and 60.3% in TRN stages IIA, IIB, and IIC. The 5-year OS was 90.0%, 81.3%, and 82.6% for the TNM stages; and 91.6%, 85.0%, and 71.9% for the TRN stages. The AIC for RFS was lower for TRN (22,318.2) than for TNM (22,390.6), and that for OS was also lower for TRN (16,285.3) than for TNM (16,355.1).CONCLUSION:Stage II colon cancer staging using the number of retrieved lymph nodes may be superior to current TNM staging for prognosis stratification.
DOI 10.1007/s00384-021-03990-y
PMID 34302501