Important role of lymphovascular and perineural invasion in prognosis of colorectal cancer patients with N1c disease

Figure 3 Receiver operating characteristic curve on the predictive prognosis. A: Lymphovascular invasion (LVI) predicting disease-free survival (DFS); B: Perineural invasion (PNI) predicting DFS; C: LVI predicting overall survival (OS); D: PNI predicting OS; E: LVI predicting cancer-specific survival (CSS); F: PNI predicting CSS; G: Three groups predicting DFS; H: Three groups predicting OS; I: Three groups predicting CSS. LVI: Lymphovascular invasion; DFS: Disease-free survival; OS: Overall survival; CSS: Cancer-specific survival; AUC: Area under the receiver operating characteristic; PNI: Perineural invasion.