Abstract：Objective: To explore the value of MRI in the diagnosis of sacral tumors. Methods: MRI appearances of 14 cases of sacral tumors proved by histopathological evaluation were retrospectively analysed. There were 5 cases of chordomas, 3 cases of giant cell tumors, 2 cases of metastatic tumors, 2 cases of neurogenic tumors, 1 case of chondrosarcoma and 1 case of teratoma. All cases were studied with X-ray plain films and MRI, some with CT. Results: characteristic MRI signs of all kinds of sacral tumors included different lesion extent and location, MRI signal intensity, sacrum destruction, sacral canal and sacral foramen deformation, soft tissue mass, calcification and remaining bone crista, bone marrow infiltration． Conclusion: MRI is effective in the preoperative diagnosis of sacral tumor and is of clinical significance to the treatment of sacral tumor.
2009, Vol. 20 
