[Hemangiopericytoma of the buccal mucosa. A case report].

Hemangiopericytoma describes a rare mesenchymal neoplasm which can occur at any site on the body and represents 1% of vascular tumors. Histologically, it is characterized by a vascular pattern with high cellularity. These tumors occur in particular near the torso and surface variants are rare. Due to the unspecific clinical picture, it is often confused with other benign mesenchymal tumors. The heterogenous course and high risk of recurrence with hemangiopericytomas necessitate long-term clinical follow-up.