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Kaplan-Meier survival curves of DFS and OS in patients with cervical cancer according to PNI expression. (A) The presence of PNI was significantly associated with lower DFS (P=0.002). (B) The presence of PNI in cervical cancer was significantly associated with lower OS (P=0.017). 18 subjects with PNI vs. 192 subjects without PNI. DFS, disease-free survival; OS, overall survival; PNI, perineural invasion.
