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The Korean Journal of Pathology 1979;13(2): 111-115.
피지 상피종의 1예
A Case of Sebaceous Epithelioma
The sebaceous epithelioma is a rare variety of skin tumor, the histogenesis of which is not clearly elucidated. Their clinical character, localization and age incidence are very similar to basal cell epithelioma, but they have small number of mature sebaceous cells as tumor element, The main pathologic finding is proliferation of basaloid germinative cells of the sebaceous glands. We experienced a case of a recurrent sebaceous epithelioma of the right parotid area in a 37-year-old woman. She had her tumor removed at the same site one year previously. The clinical impression was neoplasm of salivary glands. The tumor was located just beneath the focally ulcerated skin, and was partly encapsulated and lobulated and measured 4×2.5×2.5cm. Cut surface was homogeneously yellowish white, showing lobule formation by fibrous septa of varying thickness. Areas of hemorrhage and cystic change were seen. Microscopically there were poorly defined masses of cells of basaloid shape. There were many cystic spaces, containing amorphous hyaline-like material. This material appeared foamy and in glaces vacuolated. The tumor masses consisted of two cell types, one was similar to that seen in the basal cell epithelioma and the other was sebaceous in nature. Germinative cells were predominant throughout and invaded the fibrous septa. Mild inflammatory infiltrates were present in areas. The overlying epidermis was relatively well maintained except for focal ulceration.
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