How is etiology of fusiform aortic aneurysms?

• The most common pathologic condition associated with aortic aneurysm is Atherosclerosis. • Cystic medial necrosis is the degeneration of collagen and elastic fibers in the tunica media of the aorta. • It affects the proximal part of the aorta causing a fusiform aneurysm. • The fusiform aneurysm is particularly prevalent in patients with: (Marfan’s syndrome. Pregnant women. Hypertensive patients., Valvular heart disease patients. ) • Syphyllis is an uncommon cause of aortic aneurysm. • Tuberculous and mycotic aneurysms are rare conditions. • Vasculitis. • Spondyloarthropathies. • Traumatic. • Congenital aortic anuerysms (usually associated with bicuspid aortic valve or aortic coartation).