RT Book, Section A1 Battistella, Maxime A1 Wick, Mark R. A1 Kutzner, Heinz A1 Barnhill, Raymond L. A2 Barnhill, Raymond L. A2 Crowson, A. Neil A2 Magro, Cynthia M. A2 Piepkorn, Michael W. A2 Kutzner, Heinz A2 Desman, Garrett T. SR Print(0) ID 1178400177 T1 Sweat Gland Tumors T2 Barnhill's Dermatopathology, 4e YR 2020 FD 2020 PB McGraw Hill Education PP New York, NY SN 9780071828222 LK dermatology.mhmedical.com/content.aspx?aid=1178400177 RD 2024/04/24 AB Cutaneous neoplasms showing differentiation toward the sweat gland units are relatively uncommon specimens in general pathology but are not so uncommon in dermatopathology. Despite that fact, their histologic diversity—and the plethora of nosologic schemes that have been applied to them in the past—can be daunting at first glance. In this specific context, one is faced with a decision to adopt a stance of terminologic minimalism, using such diagnostic terms as “benign sweat gland neoplasm,” or to embrace more eclectic nomenclature as applied to adnexal tumors. This chapter (and Chap. 28) presents a moderate stance in reference to the latter issue, using a classification system that is attuned as much as possible to concepts and terms that are commonly embraced in surgical pathology and to the latest WHO classification. Because of the relatively nondescript clinical features attending many sweat gland tumors, these are not covered in any detail except for lesions in which they are distinctive and contribute meaningfully to pathologic diagnosis.