Worthy S A, Gholkar A, Ince P G
Department of Neuroradiology, Newcastle General Hospital, Newcastle upon Tyne, UK.
Br J Neurosurg. 1995;9(6):815-7. doi: 10.1080/02688699550040837.
The majority of intracranial meningiomas are isodense, well-marginated masses, adjacent to a dural surface. They show intense uniform enhancement following intravenous contrast. Atypical appearances can occur. Hypodense meningiomas have been described due to necrosis, cystic change or lipidisation of the tumour. A meningioma is described which showed two unusual features on computed tomography-a uniformly hypodense mass on an unenhanced scan and only minimal contrast enhancement. Extensive lipidisation of the tumour was demonstrated histologically.
大多数颅内脑膜瘤为等密度、边界清晰的肿块，毗邻硬脑膜表面。静脉注射造影剂后呈均匀强化。也可出现非典型表现。由于肿瘤坏死、囊性变或脂质化，曾有低密度脑膜瘤的报道。本文描述了一例在计算机断层扫描上表现出两个不寻常特征的脑膜瘤——平扫时为均匀低密度肿块，增强扫描时仅见轻微强化。组织学检查证实肿瘤有广泛脂质化。
