HighlightsOssifying fibromyxoid tumor of soft parts (OFMT) has an uncertain histopathogenesis and is characterized by a peripheral bone shell embedded in a fibromyxoid matrix.Folpe and Weiss proposed a classification with “typical”, “atypical” and “malignant” variants.The exam revealed a right perimastoid mass formation (2.2 × 1.2 × 2 cm) with an oval morphology, extended right to the back of the external ear canal, characterized by the predominant calcific component.The cytoplasm is described as a poorly eosinophilic, arranged to form solid nests and cords immersed in abundant collagenous and/or myxoid stroma, interposed in a mature irregularly shaped trabecular bone.Considering that it is extremely rare, and the possibility of local metastasis especially for the malignant type, we believe that more studies are required for this “enigmatic” tumor.