Fig. 1From: Prognostic factors in colorectal liver metastases patients with various tumor numbers treated by liver resection: a single-center, retrospective studyX-tile analysis was used to determine the optimal cut-off value for tumor number identified according to OS. A The optimal cut-off value was identified as 1 and 4. B The OS rate between the three groups. Abbreviations: OS: overall survivalBack to article page