癌性脑炎（粟粒性转移）：无强化。
Carcinomatous encephalitis (miliary metastases): lack of contrast enhancement.
作者信息
Nemzek W, Poirier V, Salamat M S, Yu T
机构信息
Department of Radiology, University of California Davis Medical Center, Sacramento 95817.
出版信息
AJNR Am J Neuroradiol. 1993 May-Jun;14(3):540-2.
Abstract
Carcinomatous encephalitis is a rare form of brain metastasis in which there is diffuse miliary spread of punctate tumor nodules in a perivascular distribution. In this case, these tiny tumor nodules were seen throughout the cortical and basal gangliar gray matter only on T2-weighted images. Contrast-enhanced CT and T1-weighted MR images did not demonstrate these tumor nodules.
摘要
癌性脑炎是一种罕见的脑转移形式，其中点状肿瘤结节呈血管周围分布的弥漫性粟粒状播散。在该病例中，仅在T2加权图像上可见整个皮质和基底节灰质中有这些微小的肿瘤结节。增强CT和T1加权磁共振图像未显示这些肿瘤结节。
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