title: A 5-year-old girl with an enlarging mass at the elbow.
abstract: Pilomatrixoma is a rare benign neoplasm that presents as a solitary, hard, mobile, subcutaneous mass. Pilomatrixomas can be found on any hair-bearing region of the body, with the upper extremity being the second most common location. Pilomatrixomas are common in children, and have a higher frequency in girls. We present a case of left-arm pilomatrixoma in a 5-year-old girl. Surgical excision was curative. Pediatric orthopedic surgeons should be familiar with this benign tumor when evaluating a calcified soft-tissue mass in the extremities of a child.
authors.affiliation: Departments of Orthopaedics and Pathology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
authors.forename: Bradley John
authors.initials: BJ
authors.lastname: Kinney
authors.forename: William L
authors.initials: WL
authors.lastname: Hennrikus
authors.forename: Elizabeth E
authors.initials: EE
authors.lastname: Frauenhoffer
mesh_terms: D002675:Child, Preschool; D004550:Elbow; D005260:Female; D006201:Hair Diseases / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D018296:Pilomatrixoma / Q000175:diagnosis* / Q000601:surgery; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000601:surgery; D016896:Treatment Outcome