MPO and neoplasm: Univariate and multivariate analyses showed that sex (HR 0.26, 95% CI 0.10–0.72, p = 0.009), venous invasion (HR 5.69, 95% CI 1.58–20.51, p = 0.008), high CA19-9, a tumor marker, levels (HR 3.16, 95% CI 1.07–9.22, p = 0.036) and high MPO–DNA levels (HR 3.53, 95% CI 1.31–9.56, p = 0.013) were significantly associated with poor RFS.