IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-6-10-12188 Original Research Paper A case of Bizarre Parosteal Osteochondromatous Proliferation (Nora’s Lesion) presenting as trigger finger Ankur Munjal Dr. October 2017 6 10 01 02 ABSTRACT

 Introduction: Bizarre parosteal osteochondromatous proliferation (BPOP) is a rare benign, locally aggressive bony lesion mainly involving the bones of hands and feet. Due to its rarity, various questions are still unanswered about its aetiology, presentation, diagnosis and natural history of this condition.


Case presentation: Current report presents a case of BPOP involving the base of proximal phalanx and presenting clinically as a trigger finger in a 26 year old white female. It describes the initial misdiagnosis at the primary care level, radiological and histological findings and the final outcome of the patient. It counters the current belief that BPOP never involves the surrounding soft tissues.


Conclusion: BPOP still poses a challenge to the treating surgeon due to its rarity and varied presentations. This case highlights that our current knowledge about the condition is incomplete and it can involve the surrounding soft tissues which has never been reported before.