RECURRENT PAROSTEAL OSTEOSARCOMA OF THE TALUS IN A 2-YEAR-OLD CHILD

Parosteal osteosarcoma is an uncommon, low-grade malignant bone tumor and is found in an older age group than conventional osteosarcoma. We present a talar parosteal osteosarcoma that recurred twice in a 2-year -old child. To our knowledge, this is the youngest patient reported wi th a parosteal osteosarcoma. The talus is an unusual site for parostea l osteosarcoma. Inadequate resection due to a diagnosis of juxtacortic al chondroma resulted in recurrence of the tumor. The age of the patie nt, the thick cartilaginous cap, and well-differentiated trabecular bo ne all contributed to the critical erroneous diagnosis.