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Thoracic aortic aneurysms are typically asymptomatic and discovered incidentally on an imaging study ordered for other indications. Small aneurysms are managed with antihypertensive therapy and surveillance imaging, using either echocardiography, computed tomographic angiography (CTA), or magnetic resonance angiography (MRA). Aneurysms are repaired when the risk of rupture or dissection exceeds the risk of repair; size thresholds for repair are determined by the underlying etiology of the aneurysm, with lower thresholds for those with genetic aortopathies. In contrast to the silent and asymptomatic nature of aneurysms, acute aortic syndromes-which include aortic dissection, intramural hematoma, and penetrating atherosclerotic ulcer-are usually associated with recognizable symptoms and signs. Acute aortic syndromes involving the ascending aorta are treated with emergent surgery, whereas those involving the descending aorta are now often treated with endovascular stent-grafting techniques. After acute aortic syndromes have been successfully treated, prognosis is favorable with close follow-up that includes optimal medical management and regular surveillance imaging. [ABSTRACT FROM AUTHOR]

Aortic valve replacement has traditionally been the treatment of choice for patients with aortic valve insufficiency with or without aortic root pathology. Aortic valve repair is emerging as an attractive treatment alternative that avoids the long-term risks associated with prosthetic valve implantation including thromboembolism, endocarditis, prosthetic valve deterioration, and anticoagulation related hemorrhage. Important achievements in this discipline have occurred over the past decade including development and refinement of valve preserving aortic root replacement techniques, development of a classification system for aortic insufficiency, surgical approaches to cusp disease with varying cusp anatomy. As surgical techniques for aortic valve repair continue to evolve, clinical outcomes up to and beyond the first decade are promising with excellent survival and low risk of valve related events. [ABSTRACT FROM AUTHOR]

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