did not reach statistical significanceP -value >.05
On the other hand, we found that Perineural invasion (Positive) and high tumor volume were correlated with poor prognosis, but did not reach statistical significance ( P -value >.05).
On the other hand, we found that Perineural invasion (Positive) and high tumor volume were correlated with poor prognosis, but did not reach statistical significance ( P -value >.05).