右側耳下部石灰化上皮腫の1例

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A 41-year-old female with a painless mass in the right subauricular region had first noticed the mass 20 years ago but was not treated. The mass was circumscribed and superfacial. Past and family histories were negative.<BR>We diagnosed a benign tumor of the subauricular region and enucleated it under local anesthesia. It was easily removed, and the tumor was a hard mass 19×22×7mm in size, 1.9g in weight, yellow and gray in color.<BR>Histologically it was composed of nests or a mass of shadow cells that did not stain with haematoxylin but appeared as sheets of eosinophile in which the outline of the individual cells and of their nuclei were visible as slightly darker areas and ossific tissue. More darkly stained basophilic cells appear adjoining shadow cells.<BR>Calcification was presented in the shadow cells and stroma.<BR>The prognosis is favorable with no sign of relapse.
社団法人日本口腔外科学会の論文