What is the difference between osteoid osteoma and osteoblastoma?
Histologically, osteoid osteoma and osteoblastoma are similar, containing osteoblasts that produce osteoid and woven bone. Osteoblastoma, however, is larger, tends to be more aggressive, and can undergo malignant transformation, whereas osteoid osteoma is small, benign, and self-limited.
Is osteoblastoma malignant?
Although osteoblastoma is considered a benign tumor, there have been very rare cases in which an osteoblastoma has transformed into a malignant (cancerous) tumor.
How is osteoblastoma treated?
Osteoblastoma treatment usually involves surgery to remove the tumor….Your provider may use:
- Marginal resection: Removing the part of the bone that contains osteoblastoma.
- Curettage and bone graft: Scraping out the tumor and refilling the area with a bone graft from a donor or another part of your body.
Can osteoblastoma spread?
Definition/Description. Osteoblastoma is a rare, benign osteoblastic (bone) tumor that most commonly develops in the spine, sacrum, long bones, and flat bones. Benign tumors do not spread to various sites or organs.
What are the radiographic findings of osteoid osteoma?
Typical Imaging Findings. Typical radiographic findings of osteoid osteoma include an intracortical nidus, which may display a variable amount of mineralization, accompanied by cortical thickening and reactive sclerosis in a long bone shaft.
What is osteoblastoma and osteoid osteoma?
Osteoid osteoma (OO) and osteoblastoma (OB) are benign osseous lesions of osteoblastic origin, consisting of a hypervascular nidus and surrounding sclerotic bone. Osteoid osteoma was first described by Jaffe in 1935. Osteoblastoma was later described by Licchtenstein in 1956.
What are the CT and MR findings in Osteoblastoma?
In addition, CT can demonstrate both edema and atrophy of the surrounding soft tissues. At magnetic resonance (MR) imaging, osteoblastoma demonstrates signal intensities similar to those of other bone neoplasms. In addition to the advantages offered by CT, MR imaging can help differentiate tumor tissue from accompanying edema.
What is the prevalence of osteoblastoma?
Osteoblastomas are rare bone-forming tumors that may be locally aggressive. They are larger (>2 cm) and tend to affect the axial skeleton more often than their histologic relative, osteoid osteoma 12. They account for 1-3% of all primary bone tumors 2,3. Patients typically present around the second to third decades of life.