Osteoid osteoma and eosinophilic granuloma of the lumbar vertebral body.

The authors describe a case of osteoid osteoma in a child and another of eosinophilic granuloma in an adult, localized in a lumbar vertebral body. A study by CT scan images, which is rather typical in the case of osteoid osteoma, could led to chronic osteitis or even to atypical osteoid osteoma in the case of eosinophilic granuloma. Histological examination defined diagnosis, and the two cases healed after surgical excision by anterior approach.