Intraoral benign mesenchymoma: a report of 10 cases and review of the literature.

A benign mesenchymoma is an unencapsulated soft tissue neoplasm composed of 2 or more mature mesenchymal tissues not normally associated with each other, excluding fibrous connective tissue. No single mesenchymal tissue should predominate with respect to the other mesenchymal elements. Ten well-documented examples of intraoral benign mesenchymoma have been reported in the English language literature. The purpose of this report is to document 10 additional cases and to review the clinicopathologic characteristics of this uncommon tumor.