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Despite advanced techniques for surgical or percutaneous therapy coarctation of the aorta continues to carry a high risk of aneurysmal formation. Mortality of these aneurysms ranges between <1 and >90%, reflecting remarkable differences in surgical strategies and the follow-up management of coarctation. We review the frequency, anatomical types, risk factors and mechanisms of aortic aneurysm forming late after surgical or percutaneous therapy of aortic coarctation. We emphasize that aneurysms do not form exclusively at the site of previous intervention, but also at remote locations such as the ascending aorta. Moreover, aneurysm formation may only in part be attributed to a specific technique of coarctation therapy, and we emphasize the role of a bicuspid aortic valve and inherent weakness of the aortic wall as significant risk factors for aneurysm after aortic coarctation. We report the presenting symptoms, follow-up protocols, and imaging criteria for local and proximal aneurysms. Finally, we discuss criteria for prophylactic intervention at the site of such aneurysms, and present therapeutic options for different types of aneurysms. With this systematic review, we wish to provide data for establishing more uniform strategies for preventing, diagnosing and treating aneurysms associated with aortic coarctation.

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