Fig. 1
Comparison of RFS (a) and OS (b) in patients with and without PNI. PNI, perineural invasion; RFS, recurrence free survival; OS, overall survival
Fig. 1 | BMC Cancer
Comparison of RFS (a) and OS (b) in patients with and without PNI. PNI, perineural invasion; RFS, recurrence free survival; OS, overall survival