日本口腔外科学会雑誌
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
耳下腺咬筋部に発生した石灰化上皮腫の2例
高野 美貴子冨永 和宏古澤 博久空閑 祥浩水野 明夫柴田 恭明岡邊 治男
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1993 年 39 巻 12 号 p. 1356-1358

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We presented two cases of calcifying epithelioma in the parotid-masseteric region. One was a 59-year-old woman, and the other was a 38-year-old man. Both cases had been aware of persistent subcutaneous nodules in the region for about thirty years. The nodules were painless, well-defined, movable and firm.
A clinical diagnosis of calcifying epithelioma was made and the tumors were enucleated. There was minimal adherence between the tumors and the surrounding tissues. The enucleated tumors measured 28 × 17 × 7 mm and 20 × 13 × 7 mm, respectively.
Histopathologically, they were composed of distinctly bordered nests or masses of shadow cells which possessed a central unstained area due to nuclear loss. Few basophilic cells and large areas of calcification were observed. In part of the tumors, a little bone formation was also observed.
The postoperative progress of the two patients is satisfactory without recurrence.

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