title: Irregular erythematous nodule on the upper arm--quiz case.
authors.affiliation: University of New Mexico Health Sciences Center, Albuquerque.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Ondo
authors.forename: Anna K
authors.initials: AK
authors.lastname: Makarewicz
authors.forename: Shelly
authors.initials: S
authors.lastname: Stepenaskie
authors.forename: Clay J
authors.initials: CJ
authors.lastname: Cockerell
authors.forename: Steven M
authors.initials: SM
authors.lastname: Mings
authors.forename: Stuart D
authors.initials: SD
authors.lastname: Shanler
mesh_terms: D000368:Aged; D001132:Arm / Q000473:pathology; D001706:Biopsy; D005260:Female; D006801:Humans; D057091:Poroma / Q000175:diagnosis* / Q000473:pathology; D012871:Skin Diseases / Q000175:diagnosis* / Q000473:pathology; D013544:Sweat Gland Neoplasms / Q000175:diagnosis* / Q000473:pathology