Title: MRI diagnosis of primary intracerebral malignant lymphoma
Abstract: [Objective] To investigate conventional MRI and diffusion-weighted MR images(DWI) features of primary intracerebral lymphoma. [Methods] MR images were reviewed retrospectively in 21 patients with pathologically proved primary intra-cerebral lymphoma.Both conventional plain and contrast MRI and DWI scanning were performed in 10 patients,while only conventional MRI scanning was performed in 11 patients.[Results] A total of 31 lesions were present in 21 patients;6 patients(28.6%) had multiple lesions.27(87.1%) of the lesions were located in the cerebral hemisphere and 3 lesions(9.7%) were located in the Cerebellum and the rest one lesion(3.2%) was located in the hypothalamus.The signals of all lesions were homogeneous and similar to grey matter on both T1 and T2-weighted images except one with a small cyst formation.Mass effect and edema surrounding the lesion can be seen in all the cases.All the lesions were strongly enhanced after the injection of the contrast medium.A fissure low signal in the centre and surrounding high signal area can be seen in 22.6%(7 lesions) of all the foci.Additional DWI scanning was taken in 10 cases with 13 lesions.All the foci were hyper signal on DWI and low signal on ADC map.[Conclusion] Primary intra-cerebral lymphoma has some special MR appearance and we can make correct diagnosis in most cases.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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