Bizarre parosteal osteochondromatous proliferation (BPOP) is a benign disorder within a spectrum of reactive proliferative processes of tubular bones, particularly the phalanges of the fingers or toes. The cause is unknown, and it is difficult to distinguish BPOP from a bone or soft tissue tumor. The radiographic and magnetic resonance imaging manifestations of reported BPOP cases are mostly no...

The purpose of this study was to review the imaging and anatomopathologic findings and to discuss the main differential diagnosis of bizarre parosteal osteochondromatous proliferation (BPOP) or Nora's lesion, a rare benign surface lesion of the bone. Histologically confirmed plain radiographs, ultrasound, CT and MRI images of four patients with BPOP were obtained and retrospectively reviewed. T...

abstract bizarre parosteal osteochondromatous proliferation (bpop), also known as nora's lesion is a rare osteocartilaginous lesion composed of a disorganized mixture of cartilage, bone, and fibrous tissue. in this article we report a case of bpop arising on the proximal and middle phalanx of ring finger in a 31 year-old woman. the clinical, radiographic, mr imaging and histopathologic findings...

  Abstract   Bizarre parosteal osteochondromatous proliferation (BPOP), also known as Nora's lesion is a rare osteocartilaginous lesion composed of a disorganized mixture of cartilage, bone, and fibrous tissue. In this article we report a case of BPOP arising on the proximal and middle phalanx of ring finger in a 31 year-old woman. The clinical, radiographic, MR imaging and histopathologic find...

Background: Bizarre parosteal osteochondromatous proliferation (BPOP), or Nora lesion, is a rare proliferative disease arising from the region of bones. Although BPOP’s pathogenesis still not certain, modern literature suggests it to be tumor-like lesion even benign neoplasm. Due extremely low incidence, this date studies on topic are limited case reports and few series. This narrative review a...

Bizarre parosteal osteochondromatous proliferation (BPOP) is a rare benign surface osteocartilaginous lesion, mainly affecting the small bones of the hands and feet. Here, we present a case of a young male with a mass in the lib that originally was thought to be a chondrosarcoma. After pathology consultation in our hospital, the final pathology diagnosis was BPOP, also called Nora’s lesion. The...

Bizarre parosteal osteochondromatous proliferation (BPOP), also known as Nora's lesion is a rare osteocartilaginous lesion composed of a disorganized mixture of cartilage, bone, and fibrous tissue. In this article we report a case of BPOP arising on the proximal and middle phalanx of ring finger in a 31 year-old woman. The clinical, radiographic, MR imaging and histopathologic findings of it ar...