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Hemangiopericytoma of the Oral Cavity after a Ten-year Follow-up

Address correspondence to Professor Stefano Tetè, Department of Oral Sciences, University of Chieti, Via dei Vestini 31, 66100 Chieti, Italy; tel 39 0871 3554095; fax 39 0871 3554095; e-mail tete{at}unich.it.

Hemangiopericytoma (HPC) is a mesenchymal tumour that may be benign, malignant, or occur in an intermediate form. We report an unusual case of hemangiopericytoma located in the buccal mucosal region. The histopathologic features showed increased cellularity, necrosis, hemorrhage, low proliferation index, and 4 or less mitotic figures per 10 high-power fields. Since this histological pattern suggests an intermediate form characterized by unpredictable clinical behavior, life-long follow-up is essential. In this patient no recurrences or distant metastases were evident at 10-yr follow-up.

Keywords: hemangiopericytoma, tumor of oral cavity