title: [Undifferentiated sarcoma of the ulna in a patient with Paget's disease].
abstract: The development of bone sarcoma in a patient with Paget disease is a classic but rare event. The authors describe the XR, CT and MR features of an undifferentiated Paget sarcoma arising in the proximal ulna, a very rare location of this tumoral complication. Clinical symptoms, radiological pattern and epidemiology are discussed. In every Paget patient presenting with a new or different pain, with or without mass effect, the radiologist has to search for signs of sarcomatous transformation, i.e. cortical osteolysis, soft tissue mass and sometimes an associated fracture.
authors.affiliation: Dpt of Radiology, Clinique St. Luc, Bouge, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Bosschaert
authors.forename: P
authors.initials: P
authors.lastname: Mailleux
mesh_terms: D000368:Aged; D001853:Bone Marrow / Q000000981:diagnostic imaging / Q000473:pathology; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D050723:Fractures, Bone / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D009373:Neoplasms, Germ Cell and Embryonal / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010001:Osteitis Deformans / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010014:Osteolysis / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014457:Ulna / Q000000981:diagnostic imaging / Q000473:pathology*