[Variability of the radiologic characteristics of osteoid osteoma].

The authors have studied the anatomical-radiographic correlations in 55 patients with osteoid osteoma. On the basis of the results gathered we feel able to state that the variability of radiologic features of osteoid osteoma (nidus surrounded by a zone of sclerosis) depends on the site of the lesion and on the advanced stage of the neoplastic tissue.