title: Cranium-Penetrating Mass Detected by Ultrasound Expedited Management of Langerhans Cell Histiocytosis.
abstract: A 6-year-old boy presented to the pediatric emergency department with a unilateral 5 × 3-cm superficial mass on the postauricular region growing for 1 month. Point-of-care ultrasound was used to evaluate the mass, which revealed a complex cystic mass penetrating the temporal bone. After confirmatory magnetic resonance imaging, the patient was transferred for neurosurgical evaluation, and the tumor was excised. Pathology revealed Langerhans cell histiocytosis.
authors.affiliation: From the *New York Methodist Hospital, Brooklyn, NY; and †Department of Emergency Medicine, Denver Health, Denver, CO.
authors.forename: Brian
authors.initials: B
authors.lastname: Morgan
authors.forename: Hsien Lee
authors.initials: HL
authors.lastname: Lau
authors.forename: Sharon
authors.initials: S
authors.lastname: Yellin
mesh_terms: D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D002648:Child; D006646:Histiocytosis, Langerhans-Cell / Q000000981:diagnostic imaging*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D019095:Point-of-Care Systems; D016896:Treatment Outcome; D014463:Ultrasonography