Senile aortic dissection

Senile aortic dissection refers to aortic dissection, which is a hematoma formed when blood within the aortic lumen enters the media of the aortic wall through a tear in the intima. It is not a dilation of the aortic wall and differs from aortic aneurysm. In the past, this condition was termed aortic dissecting aneurysm, but it is now more commonly referred to as aortic dissecting hematoma, or aortic dissection, abbreviated as aortic dissection. This dissecting hematoma of the aortic wall can extend along the artery, involve branches of the aorta, and may rupture through the adventitia causing massive hemorrhage; sometimes it re-enters the distal intima and communicates with the aortic lumen, which may temporarily alleviate the condition. The onset of this disease is acute, with complex symptoms and rapid changes, making it prone to misdiagnosis. If not treated promptly, the mortality rate is extremely high.