Fig. 2

Overall survival analysis. a Survival curve of patients with self-expandable metal stents as a “Bridge to Surgery” (SBTS group, n = 43) and emergency surgery (ES group, n = 63, P = 0.964). b Survival curve of positive and negative patients with perineural invasion (P < 0.01). c Overall survival for all patients with obstructing colorectal cancer with perineural invasion (P = 0.249). d Overall survival for all patients with obstructing colorectal cancer without perineural invasion (P = 0.392)