Diagnostic features, differential diagnosis, and treatment of subungual osteochondroma.

Osteochondromas are among the most common cartilaginous neoplasms, but are rarely seen on the fingers and toes. We report a 10-year-old girl who had a dystrophic fingernail since infancy that was identified as a subungual osteochondroma radiologically and histopathologically. The clinical, radiographic, and histopathologic features, as well as the pertinent differential diagnoses and treatment options are discussed.