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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial

SPEMD - Rev Port Estomatol Med Dent Cir Maxilofac | 2019 | 60 (2) | Page(s) 79-84


Case report

Ectomesenchymal chondromyxoid tumor with a significant proliferative index: A case report

Tumor condromixoide ectomesenquimal com um índice proliferativo muito significante: Relato de um caso


a Dentistry and Health Postgraduate Program, School of Dentistry, Federal University of Bahia, Salvador-Bahia, Brazil
b Department of Oral Pathology and Medicine, School of Dentistry, University of Chile. Santiago, Chile
c Laboratory of ImagePat, Salvador-Bahia, Brazil
d Department of Health I, School of Dentistry, State University of Southwestern Bahia. Jequié-Bahia, Brazil
e Laboratory of Oral Surgical Pathology, School of Dentistry, Federal University of Bahia. Salvador-Bahia, Brazil
Jean Nunes dos Santos - jeanunes@ufba.br

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Volume - 60
Issue - 2
Case report
Pages - 79-84
Go to Volume


Received on 28/01/2019
Accepted on 21/05/2019
Available Online on 18/06/2019


An ectomesenchymal chondromyxoid tumor (ECT) is a rare intraoral tumor that should be included in the differential diagnosis of other mesenchymal tumors, particularly when located in the tongue. This study reports a new case of a 34-year-old female patient with a nodular lesion on the tongue dorsum. Its clinical diagnosis was irritative fibroma. The lesion was surgically removed, and, after 2 years of follow-up, no recurrence was observed. A detailed description of the histomorphological and immunohistochemical features of the ECT was made, highlighting the high Ki-67 proliferative index observed.


O tumor condromixoide ectomesenquimal (ECT) é um tumor intraoral raro, que deve ser considerado no diagnóstico diferencial de outras lesões mesenquimais de tecido mole, principalmente quando localizadas em língua. Neste estudo é apresentado um novo caso de ECT, de uma paciente do sexo feminino de 34 anos de idade com uma lesão nodular em dorso de língua com diagnóstico clínico de fibroma irritativo. A lesão foi extirpada cirurgicamente e depois de 2 anos de seguimento não foram observados sinais de recidiva. Ressalta-se uma descrição detalhada das características histomorfológicas e imuno-histoquímicas do ECT, entre as quais destacou-se o alto índice de proliferação observado para o Ki-67.


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