Surgical treatment and prognosis of posteriorly invading oral cancer: Potential clinical significance of pterygomandibular raphe

OSCCs with posterior invasion beyond the PMR showed a poor treatment outcome and, therefore, should be treated with caution. The initial surgery is especially important and must ensure local control. This study indicates that the PMR is an important criterion for surgical method determination and that invasion beyond the PMR is a predictor of local recurrence and poor prognosis.