Abstract

ANDRADE, Emanuel Sávio de Souza; CAMARGO, Igor Batista; SANTOS, Teresa Cristina Vasconcelos dos  and  BARBOSA, Juliana Lyra Vilela. Clinico-pathologic study of odontogenic myxoma. Rev. cir. traumatol. buco-maxilo-fac. [online]. 2010, vol.10, n.3, pp. 073-080. ISSN 1808-5210.

INTRODUCTION: Myxoma is an uncommon benign neoplasm originating in the ectomesenchymal portion of the odontogenic system, being classified as an odontogenic tumor. OBJECTIVES: To conduct a survey of the odontogenic myxomas diagnosed at the Laboratory of Surgical Pathology of a school of dentistry between 1991 and 2006, analyzing the following clinical variables: age, sex, skin color, patient symptomatology, anatomic localization and radiographic appearance of the lesion, in addition to the following microscopic variables: cell characteristics, type of tumor matrix and presence of odontogenic epithelial nests. METHODOLOGY: The data were analyzed by means of a retrospective study that included the patient referral cards, histopathology results and slides tabulated using descriptive statistics. RESULTS: Odontogenic myxomas accounted for 0.3% of the 4,299 anatomopathological results and 1.89% of the odontogenic tumors. Of the myxomas, 69.2% occurred in adults, 53.8% in men, 61.5% in white individuals, 53.8% in the maxilla, 69.2% of which were asymptomatic and 38.5% with a radiolucent appearance. The tumor matrix was mixed in 53.8%, presenting fusiform, oval, stellate cells in all cases and an absence of odontogenic epithelial nests in 76.9%. CONCLUSION: Odontogenic myxomas are benign tumors of rare occurrence among the odontogenic tumors, which accounts for divergent reports in the literature regarding the prevalence of some clinical and microscopic features of the tumor, evidencing the need for further studies.

Keywords : Myxoma; Odontogenic Tumors.