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 of it are described .The symptoms regressed spontaneously in 2 month after incisional biopsy.
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