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

Abstract

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. (Rev Port Es