title: Chondrodermatitis nodularis chronica helicis in monozygotic twins.
abstract: Chondrodermatitis nodularis chronica helicis (CNCH) is a benign inflammatory nodule of the helix. Patients report severe tenderness upon pressure. Commonly seen in middle-aged men, there are no reports of this disease in twins. We report middle-aged male monozygotic twins who simultaneously developed CNCH. This suggests, but does not prove, the possibility of a hereditary factor in the pathogenesis of CNCH.
authors.affiliation: Department of Dermatology, University of California, San Francisco, CA 94143-0989, USA. heidichan0220@yahoo.com
authors.forename: H P
authors.initials: HP
authors.lastname: Chan
authors.forename: I M
authors.initials: IM
authors.lastname: Neuhaus
authors.forename: H I
authors.initials: HI
authors.lastname: Maibach
mesh_terms: D002357:Cartilage Diseases / Q000235:genetics* / Q000473:pathology; D004200:Diseases in Twins / Q000235:genetics* / Q000473:pathology; D004425:Ear Cartilage / Q000473:pathology; D004427:Ear Diseases / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014430:Twins, Monozygotic