A 76-year-old woman presented with a 7-mm, hard, pink nodule at the site of an appendectomy scar of more than 70 years' duration. The clinical impression at the time of biopsy was that of a keloid. Surprisingly, light microscopic examination revealed classic histologic features of late-stage lichen sclerosus et atrophicus (LSA) overlying a scar. Elastic tissue stain high-lighted the unusual presence of abundant nodules of elastin in the reticular dermis only.
From the Dermatopathology Section (A.A., J.B.) Department of Dermatology, Boston University School of Medicine, Boston, MA, Lancaster Skin Center (W.A.), Suite 104, 160 North Pointe Blvd., Lancaster, PA 17601, 6 Court House Lane (M.R.), Chelmsford, MA.
Address correspondence and reprint requests to Dr. Anne Allan, Department of Dermatology, Dermatopathology Section, Boston University Medical School, 609 Albany Street, J401, Boston, MA 02118. After March 1, 1999, Pathology Services, Inc., 640 Memorial Drive, Cambridge, MA 02139.