RT Book, Section A1 Doherty, Gerard M. SR Print(0) ID 58102391 T1 Thoracic Aortic Aneurysms T2 Quick Answers Surgery YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN LK accesssurgery.mhmedical.com/content.aspx?aid=58102391 RD 2024/10/05 AB • Can be saccular, fusiform• Common etiologies include:-Atherosclerosis-Medial degeneration of aortic wall-Marfan syndrome (defect in fibrillin gene)-Trauma and infection• Increased aneurysm rupture rate depend on: -Size-Marfan syndrome-Family history of rupture or dissection-Advancing age-Chronic obstructive pulmonary disease-Growth rate > 0.1 cm yearly• Affect the ascending, arch, or descending aorta (descending is most common)