• The Journal of the Korean bone and joint tumor society
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• v.15 no.2
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• pp.146-150
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• 2009

Osteochondromas typically arise from the metaphyseal ends of long bones. Extraskeletal paraarticular osteochondromas are unusual osteocartilaginous lesions that arise in the soft tissue adjacent to a joint with no bony continuity. We present a case of pathologically proven extraskeletal paraarticular synovial osteochondroma of the knee observed in 42-year-old female with a literature review.