Bizarre parosteal osteochondromatous proliferation (Nora’s lesion) of middle phalanx in an adult female

Abstract

Bizarre parosteal osteochondromatous proliferation (BPOP; also called Nora’s lesion) is a benign surface osteocartilaginous lesion. This condition seen in hands followed by the feet, long bones and the skull. The importance of the lesion lies in its clinical and pathological differentiation from malignant lesions mainly in osteosarcoma in children and chondrosarcoma in adults. The lesion is 20–50% recurrence rate. We present a case report of BPOP of the middle phalanx of the right middle finger.The importance of the case lies the involvement of phalanges is not rare, but if present it mainly in the proximal phalanges. In my case present in middle phalanx of the right middle finger.