Abstract
Odontogenic myxoma (OM) is a benign, slow-growth, mesenchymal-stemed and locally aggressive neoplasia of the maxilla-mandibular, derived from mesenchymal odontogenic tissues, that comprises less than 5% of odontogenic tumors. In this study is reported a case of a 45-year-old female patient presenting an asymptomatic swelling in the anterior mandible, with stony consistency and 10 years evolution, causing expansion of the lower ridges. Cone beam CT scan revealed multilocular lesion with small and regular loci, and well-defined borders. Histopathologic examination of the incisional biopsy revealed a cellular loose connective tissue of myxomatous appearance. The diagnosis was odontogenic myxoma. The patient underwent partial mandibular resection and no recurrence was observed after 2 years follow-up. Although benign, OM may have an adverse clinical outcome as a result of their infiltrative growth and progressive development. In this case, is intended to discuss the different aspects of its biological behavior and diagnostic criteria.
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