Concurrent soft tissue chondroma and periosteal chondroma of thumb

Chondromas are classified according to their locations as enchondroma, periosteal chondroma, and the extraskeletal soft tissue chondroma. Multiple chondromas are well known as part of some disease entities like enchondromatoses and synovial chondromato-sis. Many authors reported multiple chondromas previously; how-ever, we have not encountered any instance of coexistence of soft tissue and periosteal chondromas in the English literature. We present a case with concurrent soft tissue and periosteal chondro-mas appeared five years after hand trauma with clinical, radiologi-cal and histological features.