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Sebaceous carcinoma of the right arm.

Sebaceous carcinoma is an uncommon cutaneous neoplasm that is often misdiagnosed as a benign lesion, but has an aggressive clinical behavior, including a rate of distant metastasis of up to 60%. In this paper, we describe a case of sebaceous carcinoma in the right arm of a 67-year-old woman. The relevant histopathology and appropriate diagnostic and treatment approach is discussed.