title: A 6-month-old boy with enlarging bruise on his back.
authors.affiliation: University of California, San Francisco, USA. mathese@derm.ucsf.edu
authors.forename: Erin
authors.initials: E
authors.lastname: Mathes
authors.forename: Marion
authors.initials: M
authors.lastname: Koerper
authors.forename: Ilona
authors.initials: I
authors.lastname: Frieden
mesh_terms: D006390:Hemangioendothelioma / Q000175:diagnosis*; D006391:Hemangioma / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008297:Male; D013348:Subclavian Artery / Q000473:pathology; D019043:Vascular Neoplasms / Q000175:diagnosis*