Osteoid osteoma and osteoblastoma of the sacrum

This retrospective study examined 10 patients with osteoid osteoma and ? patients with osteoblastoma localized in the sacrococcyx. In the sacrum, the diagnosis was delayed compared to other sites. Curettage through a posterior approach is the treatment of choice. Radiotherapy as well as embolization of feeding arteries may be used for the most aggressive lesions. Prognosis is generally good with a low incidence of local recurrence(