Hemangiopericytoma of the oral cavity: report of case and review of the literature.

A case of hemangiopericytoma of the tongue has been described. The literature regarding hemangiopericytoma of the oral cavity has been reviewed; 35 cases have now been reported. There is essentially no difference in clinical behavior, treatment, or recurrence rate reported in the oral cavity and, because of the high recurrence rate and difficulty in predicting the clinical behavior of hemangiopericytoma, long-term follow-up care is important.