Skeletal Radiology

, Volume 36, Issue 6, pp 535–540

Bizarre parosteal osteochondromatous proliferation of the proximal humerus: case report

Case Report

DOI: 10.1007/s00256-006-0236-8

Cite this article as:
Bush, J.B., Reith, J.D. & Meyer, M.S. Skeletal Radiol (2007) 36: 535. doi:10.1007/s00256-006-0236-8


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.


Bizarre parosteal osteochondromatous proliferation (BPOP)Humerus

Copyright information

© ISS 2007

Authors and Affiliations

  • J. Bernard Bush
    • 1
  • John D. Reith
    • 2
  • Mark S. Meyer
    • 1
  1. 1.Department of OrthopedicsOchsner Clinic FoundationNew OrleansUSA
  2. 2.Departments of Pathology, Immunology and Laboratory Medicine and Orthopaedics and RehabilitationUniversity of Florida College of MedicineGainesvilleUSA