a rare case of lumbar chondroma and review of literature in this topic

Enchondroma is a kind of bone hamartoma and a benign hyaline cartilage tumor. although it is the most common benign tumor of bone, it is quite rare in the spine, especially the lumbar spine. we report a case of chondroma that was located in the lumbar spine, which extended from l2 to l5 in a 4.5-year-old child. he visited our clinic with a complaint of spine deformity and limping for 3 years. surgical resection of large ossified mass was performed and pathologically confirmed to be a benign hamartoma of hyaline cartilage with enchondral ossification. resection of mass released the tethering effect and balanced the growth speed of spine bilaterally. it is suggestive of a congenital developmental malformation with hamartomatous features and reactive changes.