Clinical Pathologic Challenge AnswerA Painful Firm Plaque on the Midback of a 53-Year-Old Woman: AnswerHedayat, Amin A. MD*,†; Collins, Lindsey K. MD*,†; Wimmer, Daniel B. DO*,†; Guill, Marshall A. MD*,†; Seidel, Gregory D. MD*,†Author Information *Department of Pathology, Dartmouth Hitchcock Medical Center, Lebanon, NH; and †Geisel School of Medicine, Hanover, NH. Correspondence: Amin A. Hedayat, MD, Dartmouth-Hitchcock Medical Center, 1 Medical Center Drive, Lebanon, NH 03756 (e-mail: Amin.Hedayat@hitchcock.org). The authors declare no conflicts of interest. The American Journal of Dermatopathology: August 2018 - Volume 40 - Issue 8 - p 621-622 doi: 10.1097/DAD.0000000000000864 Buy Metrics Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.