title: Aggressive appearance of non-ossifying fibroma with pathologic fracture: a case report.
abstract: An 11-year-old boy presented with a lytic lesion in the proximal humeral metaphysis. In spite of an aggressively reactive appearance on plain radiography and MR imaging, this lesion proved to be a non-ossifying fibroma. Fracture of the cortical shell probably contributed to the relatively wide zone of transition and periosteal reaction on plain radiography and the reactive change on MR imaging.
authors.affiliation: Department of Radiology, Iwate Medical University School of Medicine, Morioka, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Matsuo
authors.forename: S
authors.initials: S
authors.lastname: Ehara
authors.forename: Y
authors.initials: Y
authors.lastname: Tamakawa
authors.forename: Y
authors.initials: Y
authors.lastname: Kitagawa
authors.forename: M
authors.initials: M
authors.lastname: Abe
authors.forename: T
authors.initials: T
authors.lastname: Sakuma
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005350:Fibroma / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D006810:Humeral Fractures / Q000000981:diagnostic imaging*; D006811:Humerus / Q000000981:diagnostic imaging* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D011859:Radiography