CT imaging diagnosis of fibrous dysplasia of vertebrae
LI Jie, LV Liang
Department of Radiology, the Affiliated Kunhua Hospital of Kunming Medical College,the First People’s Hospital of Yunnan Province, Kunming 650032, China
Abstract：Objective: To analyse the CT imaging findings of fibrous dysplasia of vertebrae and evaluate the imaging characteristics. Materials and Methods: CT imaging findings in 6 cases with pathologically confirmed fibrous dysplasia of vertebrae were reviewed retrospectively. Among all the patients, 4 cases were male and others were female. The range of age was 31~49 years. All cases were examined by CT plain scan, 1 case was processed by MPR image reconstruction of coronal and sagittal plane. Results: Of 6 cases, 5 patients had monostotic fibrous dysplasia including 3 patients with solitary lesion and another 2 with multiple lesions, 1 patient had polyostotic fibrous dysplasia. Among them, the lesions of 2 cases were located in thoracic vertebra, 4 in lumbar vertebra. CT showed monostotic with focal lesion, monostotic with multiple lesions and polyostotic cystic radiolucent lesions with sclerotic margin, internal “ground glass”-like density or osteoid high density, but the contour of vertebral bodies was normal. The lesions located in vertebral body can be seen in all cases, one case of monostotic fibrous dysplasia with multiple lesions had involvement of appendage whereas the lesion of the polyostotic fibrous dysplasia case affected appendage, proximal rib and articulation. Conclusion： Fibrous dysplasia of vertebrae shows distinctive CT imaging features that are different from fibrous dysplasia of bone in typical sites. And it could display some collective features of fibrous dysplasia of bone. These features can be helpful to make a correct diagnosis.
2009, Vol. 20 
