脑膜瘤是常见的颅内肿瘤之一,约占颅内肿瘤的13～20%,但发生囊性变者却十分少见。即使应用CT 扫描脑膜瘤囊性变亦常有误诊。为了提高对本病的认识,现综述如下。发病率:囊性脑膜瘤的发病率很低,文献中多为个案报道。1932年Penfield认为脑膜瘤有囊肿形成者是罕见的。脑膜瘤不象常见的神经胶质瘤容易发生囊性变。可见于任何年龄,男女发病率无大差异。不少作者对幕上或幕下,儿童或成人的颅内脑膜瘤, Meningiomas are one of the common intracranial tumors and account for about 13 to 20% of intracranial tumors, but cystic changes are rare. Even CT scanning of meningioma cysts is often misdiagnosed. In order to raise awareness of the disease, it is summarized as follows. Incidence rate: The incidence of cystic meningiomas is very low, which is mostly reported in the literature. In 1932 Penfield thought that meningioma with cyst formation was rare. Meningiomas are not as susceptible to cystic changes as common gliomas. Can be seen at any age, no significant difference in the incidence of men and women. Many authors have intracranial or subcapital, intracranial meningioma in children or adults,