A Case of Superficial Epithelioma with Sebaceous Differentiation

Superficial epithelioma with sebaceous differentiation developed on the left cheek of a 58‐year‐old man over a three‐year period. Biopsy of the lesion demonstrated plate‐like lobules of basophilic basaloid cells with broad attachments to the overlying epidermis. Clusters of or solitary sebaceous cells were present within the lobules. Three tumor types were considered; a subtype of sebaceoma growing in the epidermis, an acanthotic seborrheic keratosis subtype with sebaceous differentiation, or a tumor of the follicular infundibulum with sebaceous differentiation.

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