Lanotte Michele, Perez Rosa, Boccaletti Riccardo, Castellano Isabella, Cassoni Paola, Ducati Alessandro
Institute of Neurosurgery, Department of Neurosciences, University of Turin, Turin, Italy.
Neurol Med Chir (Tokyo). 2007 Aug;47(8):360-3. doi: 10.2176/nmc.47.360.
A 49-year-old woman presented with a rare atypical growth pattern of meningioma without evidence of dural attachment manifesting as chronic headache associated with transient paresthesia and left motor disorders. On admission, neurological examination showed no abnormalities. Magnetic resonance (MR) imaging revealed a right temporo-parieto-occipital lesion, which appeared to involve the subdural space and filling the cortical sulci. The lesion caused peritumoral white matter edema. The tumor appeared hypointense on T(1)-weighted and hyperintense on T(2)-weighted MR images, with homogeneous enhancement after contrast administration. A biopsy of the lesion was performed. Histological examination indicated that the lesion was a meningioma. Intraparenchymal meningiomas should be considered in the differential diagnosis of intraaxial lesions in patients of any age.
一名49岁女性表现出罕见的非典型脑膜瘤生长模式，无硬脑膜附着证据，表现为伴有短暂感觉异常和左侧运动障碍的慢性头痛。入院时，神经系统检查未发现异常。磁共振（MR）成像显示右侧颞顶枕叶病变，似乎累及硬膜下间隙并填充脑沟。该病变导致瘤周白质水肿。肿瘤在T（1）加权磁共振图像上呈低信号，在T（2）加权磁共振图像上呈高信号，增强扫描后呈均匀强化。对该病变进行了活检。组织学检查表明该病变为脑膜瘤。在任何年龄患者的轴内病变鉴别诊断中都应考虑脑实质内脑膜瘤。
