Subungual Extraskeletal Chondroma / 대한피부과학회지

Extraskeletal chondroma is a relatively uncommon, benign soft tissue tumor that usually occurs adjacent to the periarticular tissues or tenosynovium, without any adhesion to the underlying bone. The most common site of occurrence is the hands, with more than 60% of all extraskeletal chondromas being located here. Histologically, it can resemble hyaline cartilage or chondrosarcoma of bone, which is more cellular. Whatever the histologic appearance is, the behavior is uniformly benign and it does not metastasize, therefore the recommended treatment is local excision. We report here on a case of subungual extraskeletal chondroma in a 22-year-old female who presented with a subungual nodule of the left big toe.