SPONTANEOUS REGRESSION OF EXOSTOSES - 2 CASE-REPORTS

Exostoses are a common skeletal disorder. Despite their incidence, lit tle is yet known about their origin and biological behaviour. In parti cular, spontaneous regression of exostoses - an extremely rare event - is still a subject for debate. In this study, we describe two additio nal cases of spontaneous regression of exostosis; one was a solitary l esion while the other occurred in a patient with multiple heritable ex ostoses. Radiographic findings are presented along with some of the th eories which aim at explaining this phenomenon.