Sclerosing Carcinomas of Sweat Ducts (Microcystic Adnexal Carcinoma)

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Abstract
Goldstein et al,1in 1982, described six neoplasms that they called "microcystic adnexal carcinoma" (MAC). The authors believed that the tumors exhibited both follicular and sweat gland differentiation but observed that the termsmalignant syringoma or sweat gland carcinoma with syringomatous featuresmight be preferred by some pathologists. The clinical and pathologic features of 20 patients with similar neoplasms have recently been reported under the termsclerosing sweat duct (syringoma-tous) carcinoma (SSDC).2The contributions of Lupton and McMarlin3and Nickoloff and co-workers4in this issue of theArchivesfocus the attention of dermatologists on this important neoplastic entity. The literature now contains descriptions of at least 36 patients whose neoplasms probably or definitely belong in the category under consideration.1-14The patients ranged in age from the second to the eighth decades. Male and female patients were affected equally

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