title: Bizarre parosteal osteochondromatous proliferation of the proximal humerus: case report.
abstract: Bizarre parosteal osteochondromatous proliferation (BPOP), or Nora's lesion, is a rare lesion of bone occurring predominantly in the long bones of the hands and feet. It exists as a puzzling clinical entity of uncertain origins and high recurrence rates after surgical resection. To our knowledge, this clinical entity has not been reported in the proximal aspect of the humerus. An interesting report of a lesion occurring in the proximal humerus, which initially was misinterpreted as a parosteal osteosarcoma, is discussed outlining the clinical, radiographic and pathologic features of the BPOP lesion.
authors.affiliation: Department of Orthopedics, Ochsner Clinic Foundation, 1514 Jefferson Highway, New Orleans, LA 70121, USA. jbush@ochsner.org
authors.forename: J Bernard
authors.initials: JB
authors.lastname: Bush
authors.forename: John D
authors.initials: JD
authors.lastname: Reith
authors.forename: Mark S
authors.initials: MS
authors.lastname: Meyer
mesh_terms: D001706:Biopsy; D001859:Bone Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D006811:Humerus / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D018216:Osteochondromatosis / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed