[Review of 115 cases of osteoid osteoma]

115 cases of osteoid osteoma treated over more than 18 years is reported. In 1 case the nidus was manifested in 2 different sites after 14 years. The following is emphasized: the terminology for osteoid osteoma should be changed in reference to osteoblastoma; osteoid osteoma and osteoblastoma constitute different aspects of the same neoplasia; the number of observations of osteoid osteoma increases as there is greater knowledge on the varieties of the tumor; treatment, which is exclusively surgical, may be limited to excision of the nidus, in order to guarantee the best healing possible. Resection should be limited to observations where the nidus is masked by osteosclerosis.