Recurrent Natural Killer Cell Lymphoma with Central Nervous System Metastasis Mimicking Cerebellar Infarction

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• 作者：Lai-fung Li¹ ; Gilberto Ka-kit Leung¹ ; ^{gilberto@hkucc.hku.hk" class="auth_mail" title="E-mail the corresponding author} ; Ronnie Sin-lun Ho² ; Wai-man Lui¹
• 关键词：Infarct ; Lymphoma ; MRI
• 刊名：World Neurosurgery
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：84
• 期：6
• 页码：2074.e5-2074.e9
• 全文大小：1585 K

文摘

Natural killer cell lymphoma is an uncommon hematologic malignancy, and central nervous system metastasis is rare. The classic magnetic resonance imaging appearance of lymphoma in the brain is T1 hypointense with strong homogeneous gadolinium enhancement, variable T2 signal, and restricted diffusion on diffusion-weighted images. Gadolinium enhancement is an important feature to differentiate lymphoma from infarction.

Case Description

We present the case of a middle-aged man who presented with recurrent natural killer cell lymphoma that metastasized to the cerebellum. Computed tomography and magnetic resonance imaging did not show a contrast-enhancing lesion; imaging features were more suggestive of cerebral infarction. The patient subsequently died, and postmortem examination confirmed natural killer cell lymphoma metastasis to the cerebellum.

Conclusions

Lymphoma can mimic cerebral infarction on computed tomography and magnetic resonance imaging. An imaging appearance of cerebral infarction in a patient with a history of lymphoma should raise suspicions of lymphoma metastasis.