The type of liver resection (anatomical resection, AR or nonanatomical resection, NAR) for colorectal liver metastases (CRLM) is subject to debate. The debate may persist because some certain prognostic factors, associated with aggressive biological behavior of tumor, have been overlooked. The aim of our study was to investigate the characteristics of patients who would benefit more from anatomical resection for colorectal liver metastases.
729 patients who underwent hepatic resection of CRLM were retrospectively collected from June 2012and May 2019. Treatment effects between AR and NAR were compared in full subgroup analyses. Tumor relapse-free survival (RFS) was evaluated by a stratified log-rank test and summarized with the use of Kaplan-Meier and Cox proportional hazards methods.
Study Type
OBSERVATIONAL
Enrollment
729
Based upon the segmental anatomy of the liver according to Couinaud system, AR was defined as resection of 1 or more complete hepatic segments in our study, including bisegmentectomy, right hemihepatectomy, left hemihepatectomy, extended right hemihepatectomy, extended left hemihepatectomy, single segmentectomy, caudate lobectomy, or a combination of these. NAR, known as wedge resection, was defined as resection of the tumor with a margin of normal parenchyma without regard to hepatic anatomy.
RFS
Relapse-free survival since patients undergoing hepatic resection
Time frame: 2012.6.1-2022.6.1
OS
Overall survival since patients undergoing hepatic resection
Time frame: 2012.6.1-2022.6.1
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.