To the Editor.—
A tumor with typical morphologic features of adenoid cystic carcinoma (ACC) was seen as a primary skin lesion in one patient. I believe this case could represent an unrecognized sweat gland neoplasm different from the mucinous (adenocystic) carcinoma described by Mendoza and Helwig.1 Furthermore, the tumor reported here had an unusually long duration of 14 years without metastasis, and was located in the scalp, where, to my knowledge, primary instance of such a tumor has not been previously mentioned in the literature.
Report of a Case.—
The patient was a 66-year-old woman who for 14 years had a mass in the left parietal region of the scalp. There were no similar lesions elsewhere. The mass was removed with the covering skin and a segment of periosteum adherent to the undersurface. Grossly, it consisted of multiple, elevated, confluent nodules. The overlying skin showed areas of alopecia. The
Boggio R. Adenoid Cystic Carcinoma of Scalp. Arch Dermatol. 1975;111(6):793–794. doi:10.1001/archderm.1975.01630180121024
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