脑膜瘤和恶性脑膜瘤CT与血管造影的综合分析

COMBINED ANALYSES OF CT AND CEREBRAL ANGIOGRAPHIC FEATURES OF BENIGN AND MALIGNANT MENINGIOMAS

复习了58例经手术和病理证实的脑膜瘤和恶性脑膜瘤,其中13例为不典型CT表现脑膜瘤,10例为恶性脑膜瘤。不典型CT表现有:瘤内不均一增强,瘤内有多个无增强的低密度区,瘤周广泛低密度区,肿瘤呈环形增强,肿瘤合并出血。

58 meningiomas verified by operation and pathology were reviewed, of them 13 cases had atypical CT findings, 10 cases were malignant meningiomas.The atypical CT manifestations are as follows, heterogeneous enhancement within the tumor mass, a few nonenhancing low density areas, hypocense area adjacent to tumor, ring-like enhancement; intratumoral hemorrhage, pathological basis of atypical-CT features of xmeningioma and CT and angiographic appearances of malignant meningiomas are discussed.For diagnosis of atypical and malignant meningiomas combined CT with angiogr-aphy examinations are recommended