脑膜瘤一般是良性实质性的,但有时可伴有大的囊肿称为囊性脑膜瘤。开始时囊肿小称微囊肿,以后逐渐长大可严重压迫大脑。自Cushing氏1938年首次论述本病后至今,文献记载者共约110例。过去对本病常难以作出术前诊断,手术前多诊断为颅内占位性病变或神经胶质瘤,只有手术或尸体解剖时才能明确诊断,自CT扫描应用于临床并配合脑血管造影后,大部份病例于手术前即可获得确诊。囊肿发生于脑膜瘤内者称瘤内囊肿,占48％,发生于脑膜瘤周围者称瘤周囊肿,占52％。 Meningioma is generally benign, but sometimes associated with large cysts known as cystic meningioma. Small cysts at the beginning of small cysts, after gradual growth can be severe oppression of the brain. Since Cushing’s first review of the disease in 1938, there are about 110 documented patients. The past is often difficult to make preoperative diagnosis of the disease, preoperative diagnosis of intracranial space-occupying lesions or gliomas, surgery or autopsy can only be a clear diagnosis, since the CT scan used in clinical and with cerebral angiography , Most cases can be confirmed before surgery. Cysts occur in meningiomas within the tumor cysts, accounting for 48%, occurred in the meningioma around the peritumoral cysts, accounting for 52%.