title: Linear congenital Becker nevus.
abstract: Becker nevus is an acquired disorder that usually manifests in late childhood or adolescence as a hyperpigmented hypertrichotic patch usually located on the upper trunk or proximal upper extremities. Only a few cases of congenital and familial Becker nevus have been described. Although the lesions may have various shapes, they consistently have a geographic or blocklike configuration in an irregular fashion; a linear pattern has rarely been reported. We describe a case of linear congenial Becker nevus following Blaschko line that appeared at birth on the right shoulder, with hypertrichosis developing 4 years later.
authors.affiliation: Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea. romio@hanyang.ac.kr
authors.forename: Young-Suck
authors.initials: YS
authors.lastname: Ro
authors.forename: Joo-Youn
authors.initials: JY
authors.lastname: Ko
mesh_terms: D001707:Biopsy, Needle; D002648:Child; D005500:Follow-Up Studies; D006801:Humans; D017495:Hyperpigmentation / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D006983:Hypertrichosis / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D007150:Immunohistochemistry; D008297:Male; D018330:Nevus, Intradermal / Q000150:complications / Q000151:congenital* / Q000473:pathology*; D035583:Rare Diseases; D034941:Upper Extremity