title: Exophytic nodule on the helix.
authors.affiliation: Department of Dermatology, University of Pittsburgh, Pennsylvania 15213, USA.
authors.forename: Robin P
authors.initials: RP
authors.lastname: Gehris
authors.forename: Drazen M
authors.initials: DM
authors.lastname: Jukic
authors.forename: Joseph C
authors.initials: JC
authors.lastname: English
mesh_terms: D000293:Adolescent; D002114:Calcinosis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004431:Ear, External; D006801:Humans; D008297:Male