title: Utility of the "magnet sign" in the differential diagnosis of a firm papule in the skin.
abstract: A symptomatic retained foreign body can be frustrating to physicians and patients alike. Herein we present a case of a retained metal ball bearing from an air gun injury. This brief communication highlights an innovative "bedside" technique that helped to confirm the diagnosis and allow for immediate and definitive management.
authors.affiliation: Kids' Scar Treatment and Revision Program, San Diego, California; Pediatric and Adolescent Dermatology, Rady Children's Hospital, San Diego, California.
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Krakowski
authors.forename: Lauren
authors.initials: L
authors.lastname: Bennett
authors.forename: Samar
authors.initials: S
authors.lastname: Kaifi
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005138:Eyebrows; D005547:Foreign Bodies / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D060328:Magnetic Phenomena; D008297:Male; D014948:Wounds, Gunshot / Q000175:diagnosis* / Q000601:surgery*