The imaging features of primary lymphoma in central nervous system

SUN Zhao-lian; CAO Fen; SUN Qi-zhong

Abstract：Objective To explore the imaging features of primary lymphoma in central nervous system so as to improve the diagnostic accuracy of imaging .Methods A retrospective analysis of imaging findings was performed on 25 cases with pathologically confirmed central nervous system lymphoma .Features of CT or MRI appearances of the tumors were stud-ied .Results On CT ,MRI imaging ,single lesions were found in 16 cases and multiple ones in 9 .The single lesions were commonly located in deep white matter ,while these multiple lesions were more commonly located in midline structure and convex regions of brain hemisphere .These lesions were isointensity or slightly hyperintenity on CT images ,and isointense or slightly hypo-intense on T1 weighted images ,and isointense or slightly hyper-intense on T2 weighted images .The le-sions were hyperintensity on diffusion weighted image .In contrast enhancement ,those lesions displayed in a intense and homogeneous pattern .Different edema existed around these lesions .Conclusion The imaging findings of primary lympho-ma in central nervous system have some characteristics ,its diagnostic accurate rate can be improved by considering both the CT and MRI features and the patient’s clinical information .