title: Clinicopathologic challenge.
authors: Department of Dermatology, University of Pennsylvania, Philadelphia, PA 19104-6087, USA. hudacek@mail.med.upenn.edu
authors: Kristin D
authors: KD
authors: Hudacek
authors: András
authors: A
authors: Schaffer
authors: William D
authors: WD
authors: James
mesh_terms: D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D017495:Hyperpigmentation / Q000473:pathology*; D008010:Lichen Planus / Q000473:pathology*; D012867:Skin / Q000473:pathology*