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CT and MRI of spinal lymphoma

LIU Ying 1,YUAN Hui-shu 1,LIU Xiao-guang 2(1.Department of Radiology,2.Department of Orthopaedics,Peking University Third Hospital,Beijing 100191,China)  
Objective To discuss the CT and MR imaging appearances and diagnostic value of spinal lymphoma.Methods Sixteen patients with pathologically proved spinal lymphoma(aged 8 to 63 years)were retrospectively reviewed.CT were performed in all 16 patients,and MRwere performed in 12 patients.Results Totally 65 vertebrae(cervical 15,thoracic 22,lumbar and sacrum 28)were involved.Multiple lesions were found in 11 patients.The characters of these lesions were osteolytic,osteogenic or mixed on CT.The signal intensity was hypo or iso on T1WI and iso or slightly hyper on T2WI.The extradural involvements were more extensive than that of the vertebrae both on CT and MR images.Conclusion Lesions of spinal lymphoma usually demonstrate various bone destructions on CT,and hypo or iso intensity on T1WI as well as iso or slightly hyper intensity on T2WI,tending to involve paraspinal or extradural space,and longitudinal involvements are often seen along the vertebral canal.MRI is more sensitive than CT in detecting spinal lymphoma lesions.
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