Fong Clinical Risk Score for Colorectal Cancer RecurrenceLoading...Node-positive primaryNo0Yes+1Disease-free interval < 12 monthsNo0Yes+1> 1 tumorNo0Yes+1Preoperative CEA level > 200 ng/mLNo0Yes+1Size of largest tumor > 5 cmNo0Yes+1适用指征洞见与注意事项