1. Objective To analyze the imaging findings of osteoblastoma.

2. Osteoblastoma and osteosarcoma showed bony intensity on CT and low signal on MRI with soft tissue mass in osteosarcoma .

3. An osteoblastoma is just a big osteoid osteoma in the vertebra.

4. Method: six cases of osteoblastoma of the nasal cavity and paranasal sinuses were analyzed retrospectively.

5. Conclusions The clinical features of spinal osteoblastoma are complex. Clinical manifestations, imaging features and needle biopsy could be performed conjointly to confirm the diagnosis.

6. The boundary of malignant osteoblastoma was obscure[/osteoblastoma.html], and adjacent tissue could be invaded.

7. Conclusion. This case illustrates that the MRI findings for osteoblastoma can be misleading and caution should be used when evaluating benign tumors with known inflammatory responses on MRI.

8. The clinical and X-ray findings of 21 cases with osteoblastoma were reported.

9. Objective:To study the diagnostic and differential criteria for benign and malignant osteoblastoma.

10. Among them, there were 7 osteosarcomas, 5 giant cell tumors, 1 malignant fibrous histiocytoma, 1 chondrosarcoma and 1 osteoblastoma.

11. CONCLUSION: It is valuable to study the clinicopathologic characteristics of osteoblastoma in the jaws for better diagnosis and treatment.

12. Objective. To describe the magnetic resonance imaging (MRI) and computed tomography (CT) findings of spinal osteoblastoma and illustrate how MRI features can be potentially misleading.

13. A benign lesion was favored given the CT features and conservative resection was performed. Final pathologic diagnosis was osteoblastoma.