[Subungual chondroma, a case report].

Subungual chondroma is a rare occurrence of periosteal chondroma, which mainly affects short tubular bones of the hands and feet. Transformation towards malignancy has been described in a small number of cases; however histologic diagnosis can prove to be difficult, especially with regard to well differentiated chondrosarcoma. We report the case of a 14 year old girl with a one year history of subungual chondroma of the fourth toe with good clinical response to surgical removal.