第206课 病例探析（54）—（右侧侧脑室后角）脑膜瘤

患者，女，43岁，间断性头痛3年，加重15天。

（右侧侧脑室后角）脑膜瘤

  右侧侧脑室后角见一类圆形软组织肿块影，呈稍呈T1等T2信号，FLAIR呈高信号，DWI呈高信号，增强扫描呈明显均匀强化，右侧脑室后角受压稍扩大。

A kind of round soft tissue mass shadow was seen in the posterior horn of the right lateral ventricle, which presented slightly T1 and T2 signals, FLAIR presented high signals, DWI presented high signals, enhanced scanning presented obvious homogeneous enhancement, and the posterior horn of the right ventricle was slightly enlarged under compression.

 脑室内脑膜瘤起源于脉络膜或脉络丛的蛛网膜细胞，侧脑室体部、三角部和颞角存在脉络丛，并经室间孔延伸至第三脑室，第四脑室底部也存在脉络丛，常发生在30-60岁的成年女 性，男女比例约1:2，脑室脑膜瘤临床首发症状通常为头痛、头晕、呕吐、肢体乏力、视力障碍、癫痫及共济失调等，主要由占位效应所致的颅内压升高、脑积液循环受阻或局部压迫引起；在早期表现为间断性的发作，主要是由,于脑脊液的回流障碍；MR表现：瘤体为圆形、类圆形及分叶状肿块,平扫呈稍长或稍短T1信号，稍长或等T2信号。增强大多数表现为明显强化。

Intraventricular meningiomas originated in the choroid or choroid plexus arachnoid cells, lateral ventricle body choroid plexus, triangle and temporal horns, and the room between Kong Yanshen to the third ventricle, the bottom of the fourth ventricle also exist in choroid plexus, often occur in 30 to 60 years old adult female sex, the male to female ratio is about 1:2, intraventricular meningiomas started clinical symptoms are usually have a headache, dizziness, vomiting, body weakness, visual impairment, epilepsy and ataxia, etc., mainly caused by the placeholder effect of intracranial pressure, cerebral fluid circulation suffocate or local oppression; In the early performance of intermittent attacks, mainly by cerebrospinal fluid reflux disorder; MR manifestations: the tumor was a round, round and lobulated mass, with a slightly longer or shorter T1 signal and a slightly longer or equal T2 signal in plain scanning. Enhancement most of the manifestations are obvious enhancement.