Thoracic aortic dissection aneurysm

Aortic blood flow enters the aortic wall through the intimal fissure and forms a hematoma in the aortic wall. When the hematoma is enlarged, the middle layer of the aortic wall is stripped into two layers, the inner and outer layers, which is called the aortic dissection aneurysm. Sennertus in 1542 and Morgagni in 1761 described the disease. In 1826 Laennec called it a dissecting aneurysm. The incidence of aortic dissection aneurysms is about 5 to 10 cases per million people per year. The ratio of male to female is about 3: 1, and the age of onset is mostly over 40 years.

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