title: Dermpath quiz: An irregularly colored papule on the back of an adolescent female.
abstract: This learning exercise challenges clinicians and dermatopathologists to consider the differential diagnosis of an unevenly colored solitary papule over the upper back of an adolescent female.
authors.affiliation: New York University School of Medicine, New York, NY, USA.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Price
authors.affiliation: Polley Clinic of Dermatology and Dermatologic Surgery, Wilson, NC, USA.
authors.forename: Dennis C
authors.initials: DC
authors.lastname: Polley
authors.affiliation: Polley Clinic of Dermatology and Dermatologic Surgery, Wilson, NC, USA.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Sabol
authors.affiliation: Ackerman Academy of Dermatopathology, New York, NY, USA.
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Elston
keywords: Halo nevus; leukoderma acquisitum centrifugum of Sutton; pigmented nevus