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人们把直径≥2.5cm 的颅内动脉瘤称为颅内巨大动脉瘤。本病发病率一般认为占颅内动脉瘤的3～5%,也有作者报告高于5%,如Fox 在4,400例成人动脉瘤中有748例为巨大动脉瘤(占17%);Sundt 在594例颅内动脉瘤中,80例为巨大动脉瘤(占13%)。一般认为女性发病多于男性,约为3∶1或2∶1,以30～60岁发病最多。据Fox 统计巨大颅内动脉瘤的发生部位以颈内动脉最多(占54%);基底动脉次之(占16%);再次为前交通动胨(10%),大脑中动脉(9%)及椎动脉(7%)。这五枝
People called intracranial aneurysms with a diameter of 2.5cm or more as giant intracranial aneurysms. The incidence of the disease is generally considered to account for 3 to 5% of intracranial aneurysms, but also reported by the authors is higher than 5%, such as Fox in 4,400 cases of adult aneurysms, 748 cases of giant aneurysms (17%); Sundt at 594 Among the cases of intracranial aneurysms, 80 were giant aneurysms (13%). It is generally believed that the incidence of females is more than that of males, which is about 3:1 or 2:1. The incidence of 30-60-year-old is the most. According to statistics from Fox, the largest intracranial aneurysm is located in the internal carotid artery (54%); the basilar artery is the second (16%); the former is once again trafficked (10%) and the middle cerebral artery (9%). And vertebral artery (7%). The five branches