족부의 Nora 병변

Nora's Lesion in the foot

Bizarre parosteal osteochondromatous proliferation of bone (BPOP) was first described in 1983 by Nora et. al., who reported 35 cases of a bizarre proliferative lesion involving the small bones of the hands and less often the feet. These lesions simulate osteochondromas and conlain cartilage cap exhibiting atypical chondrocytes often undergoing ossification. Radiologically, they differ from osteochondromas. The lesion recurs in a significant number of cases after local excision, and the disturbing cytologic features may lead to a mistaken diagnosis of malignancy. The purpose of this report is to describe a case of bizarre parosleal osteochondromatous proliferation of the foot in a patient without traumatic history.