主动脉夹层动脉瘤破裂，发病急、５０％的病人的发病后２４ｈ内死亡。除常见的临床表现外，亦有隐匿性发病、易误诊。我院从１９９３年～１９９７年共收治１２例夹层动脉瘤病人，现报告如下．１临床资料１２例病人中最大年龄６５岁，最小３５岁，男１０例，女２例，平均年... The ruptured aortic aneurysm ruptured with acute onset, and 50% of patients died within 24 hours after onset. In addition to common clinical manifestations, there are also occult onset, and are often misdiagnosed. Our hospital has treated 12 patients with dissecting aneurysms from 1993 to 1997. The report is as follows. 1 Clinical data The maximum age was 65 years old and the minimum age was 35 in 12 patients. There were 10 males and 2 females.