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J. bras. patol. med. lab ; 52(3): 189-193, May-June 2016. tab, graf
Article in English | LILACS | ID: lil-788989

ABSTRACT

ABSTRACT Lipomas are benign neoplasms of adipose tissue presenting several histologic variants, which can be rarely found in the oral cavity. We present a case of a 62-year-old woman with a submucous nodule located in the tongue. Histopathological examination revealed an encapsulated tumor composed of myxoid tissue, spindle cells and mature adipocytes in transition to cartilaginous tissue. The final diagnosis was spindle-cell lipoma with myxoid change and chondroid differentiation. No sign of recurrence was found after five years. The diagnosis of intraoral mesenchymal lesions with chondroid differentiation requires careful histologic examination, mainly to differentiate between benign and malignant lesions.


RESUMO Lipomas são neoplasias benignas de tecido adiposo que podem apresentar diversas variantes e raramente são encontradas na cavidade oral. Apresentamos o caso de uma mulher de 62 anos de idade com queixa de um nódulo na língua. A análise histopatológica da lesão revelou tumor encapsulado composto de tecido mixoide, células fusiformes e adipócitos maduros em transição para tecido cartilaginoso. Nenhum sinal de recorrência foi observado após acompanhamento de cinco anos. O diagnóstico de lesões mesenquimais intraorais contendo diferenciação condroide requer atenção especial, principalmente para a diferenciação de lesões benignas e malignas.

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