颅内巨大动脉瘤系指直径在1.5厘米以上位于蛛网膜下腔内的动脉瘤,在经证实的颅内动脉瘤中,约占5%。女性与男性之比为2:1。由于它们的体积,部位和瘤颈宽,使手术治疗困难和令人生畏。作者报导13例,临床资料如下:动脉瘤直径在2～4.5厘米。女性10例,男性3例。第一次出现症状的平均年龄为51岁,它们表现为:蛛网膜下腔出血9例,压迫体征2例.癫癎1例,无症状1例。动脉 Intracranial giant aneurysms refer to aneurysms in the subarachnoid space more than 1.5 cm in diameter, accounting for about 5% of confirmed intracranial aneurysms. The ratio of women to men is 2:1. Due to their size, location, and wide neck, surgical treatment is difficult and daunting. The author reported 13 cases. The clinical data are as follows: The diameter of the aneurysm is 2 to 4.5 cm. There were 10 females and 3 males. The average age of the first symptoms was 51 years old. They presented as 9 cases of subarachnoid hemorrhage and 2 cases of signs of compression. 1 case of epilepsy and 1 case of asymptomatic. artery