CT Findings Of Spine Osteogenic Metastases

Objective To discuss the value of CT performance in the differential diagnosis of spinal osteogenic metastases.Methods Retrospectively analyzed the CT data of 50 patients with spinal osteogenic metastases.The lesions were confirmed by clinic or pathology. The morphology, density, involvement of the vertebrae and the change of bony margin of the lesions were analyzed.Results All 410 vertebrae were scanned in 50 patients.Totally 220 vertebrae were involved, and 460 osteogenic lesions were foundincluding 356 lesions involved vertebraee and 104 lesions involved attachments. According to the scope and shape, the lesions involved vertebrae were divided into the whole vertebrae shape(45), nodular shape(128), circular shape(63) and irregular shape(120). Totally 177 lesions involved the cortex.The performance included cortical thickening and outer margin coarsing, jigsaw changing or smooth.According to the density, the lesions involved attachments were divided into the ground-glass hyperdensity(34),flocc hyperdensity(26), ivory-like hyperdensity(30) and mixed hyperdensity(120).Conclusion The CT imaging features of spinal osteogenic metastases has certain characteristics. Lesions mainly in bone sclerosis. Such as ground-glass,flocc, ivory-like or mixed hyperdensity. Lesions form into nodular shape,ring,irregular shape. And ring lesions for osteogensis type identification of metastatic lesions located in the vertebral body.Lesions located in the side of the vertebral body, on the other side edge for bone cortex. The affected bone cortex were coarse sample, jigsaw or smooth thickening. Attachment lesions rare. Most of them can be distinguished from other osteogenic lesions. Such as Bone island, Paget’s disease,Hodgkin’s disease of bone and so on.