This study aimed to investigate whether there is a correlation between the computed tomography–detected extramural venous invasion (ctEMVI) and disease-free survival (DFS) in patients with gastric cancer using pathologic lymphovascular invasion as a reference standard.Methods
We retrospectively reviewed 153 patients with gastric cancer who underwent computed tomography during 1 year. Differences in pathological findings between the ctEMVI-positive and ctEMVI-negative groups were analyzed. Disease-free survival was estimated using the Kaplan-Meier method. Factors affecting DFS were analyzed with the Cox proportional hazard model.Results
The ctEMVI-positive group was correlated more with lymphovascular invasion (P = 0.008). The 1- and 2-year DFS rates were 92% and 80%, respectively, in the ctEMVI-negative group, but 77% and 54%, respectively, in the ctEMVI-positive group. A multivariate analysis revealed that tumor size, ctEMVI, and pathological stage remained associated with DFS (Ps = 0.037, 0.015, and 0.002, respectively).Conclusions
The ctEMVI was an independent prognostic factor for worse DFS in patients with gastric cancer.