Fig. 2From: Dickkopf-related protein 1, a new biomarker for local immune status and poor prognosis among patients with colorectal liver Oligometastases: a retrospective studya Comparison of preoperative serum DKK1 level between stage I to III CRC and CRCLOM patients. b Comparison of relative DKK1 expression between 12 pairs of primary and metastatic leisions. T: primary tumors; M: metastatic lesions. c and d Kaplan–Meier curves comparing recurrence-free survival c and overall survival d of CRC liver oligometastases patients with high and low serum DKK1. **: 0.001 ≤ P < 0.01Back to article page