title: Nevoid acanthosis nigricans localized to the umbilicus.
authors.forename: Sung Kwon
authors.initials: SK
authors.lastname: Kim
authors.forename: You Chan
authors.initials: YC
authors.lastname: Kim
mesh_terms: D000052:Acanthosis Nigricans / Q000473:pathology*; D000293:Adolescent; D005260:Female; D006801:Humans; D014472:Umbilicus