Case report 588: Intracortical chondroma of the left femur.

A case of intracortical chondroma in the left femur in a 22-year-old man is presented. Proof was obtained by open biopsy. The issue of periosteal vs intracortical chondroma was discussed in depth, with emphasis on the radiographic appearances. The differential diagnosis of this benign intracortical lesion was also included. The histopathologic characteristics of this intracortical chondroma were described and a possible explanation for the unusual location of the cartilage lesion within the cortex was considered.