Anatomical Resection in Colorectal Liver Metastases Patients

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.

Inclusion Criteria:(1)Age 18-79 years;(2) Histologically proven colorectal adenocarcinoma;Exclusion Criteria:(1) the histologic type of tumor was not called adenocarcinoma; (2) peritoneal metastasis; (3) number of liver metastasis >3; (4) simultaneous anatomical and nonanatomical resections; (5) R2 resection; (6) history of previous hepatectomy; (7) incomplete data. The rest of patients were divided into 2 groups: patients undergoing an AR, and patients undergoing a NAR.