Nomograms for estimating survival in patients with liver-only colorectal metastases: A retrospective study.

•A total of 9615 patients with CRLM were included in the study.•Nomograms predicting OS and CSS were constructed according to 9 independent clinicopathological factors.•The C-indexes of the nomograms were significantly better than the TNM staging system (7th edition) for predicting both OS and CSS.•The calibration plots displayed an optimal agreement between the predictive results and the actual observed outcomes.