Dysplasia Epiphysealis Hemimelica or Trevor's Disease: A Case Report

Abstract

Trevor’s disease, or dysplasia epiphysealis hemimelica (DEH), is an uncommon skeletal developmental disorder representing an osteochondroma arising from 1 or more epiphyses. We present the case of a 21-year-old female who had suffered from a hard protruding mass of the right ankle for more than 10 years. It was mistakenly thought to be posttraumatic osseous fragments by a local practitioner since her childhood. However, DEH was diagnosed with the characteristic image findings and proven by the pathology report after an operation. Review of the related literature shows that this disease is rare in Taiwan. The imaging studies, which are helpful in making a correct diagnosis and proper preoperative plan, are also discussed.