“…The "average patient" with an aneurysm of the ascending aorta died in 8 [27][28][29] Although the terms "dissection" and "rupturie" have been used interchangeably by some authors, the ternm "dissecting aneurysm" should be used only for those lesions in which the dissection involves the aortic wall, separating the intimia and adventitia usually in the plane of the media. Such lesions ordinarily start in the arch of the aorta and then progress peripherally.30 32 Infrequently they are self-limiting and may break back into the lumen of the vessel producing the so-called "double aorta. "33 Usually, however, the result is death within 2 weeks.…”