Masdeu J C
Neurology. 1983 Jul;33(7):836-40. doi: 10.1212/wnl.33.7.836.
On CT, mass effect and contrast enhancement have limited value in separating brain neoplasm from infarct, because both findings are frequent with recent infarction. Review of CT in 100 patients with histologically proven supratentorial lesions (35 infarcts and 65 tumors) indicated the specificity of three helpful signs: (1) White matter edema outlined the uninvolved cortex in 73% of metastases and in 74% of gliomas but only in 14% of infarcts. (2) The cortical ribbon was enhanced in 43% of infarcts, in 7% of gliomas, and in 4% of metastases. (3) Selective sparing of the thalamus occurred in 31% of infarcts but only in 7% of tumors.
在CT上，占位效应和对比增强对于区分脑肿瘤和梗死的价值有限，因为这两种表现在近期梗死中都很常见。对100例经组织学证实的幕上病变患者（35例梗死和65例肿瘤）的CT检查回顾显示，有三个有用征象具有特异性：（1）白质水肿勾勒出未受累皮层，在73%的转移瘤和74%的胶质瘤中出现，但仅在14%的梗死中出现。（2）皮质带在43%的梗死、7%的胶质瘤和4%的转移瘤中增强。（3）31%的梗死中丘脑有选择性保留，而肿瘤中仅7%出现这种情况。
