Since the introduction of endovascular aneurysm repair (EVAR) in 1987, it has advanced rapidly. Along with this has come the development of new complications specific to the use of the endograft. The most prominent of these is the endoleak. An endoleak is defined as “persistent blood flow outside of the endograft but within an aneurysm or adjacent vascular segment being treated by the device.” It represents a treatment failure as the risk of aneurysm rupture remains given the ongoing pressurization of the aneurysm sac by the persistence of blood flow within it. Early reports of endoleaks estimated the incidence to be around 20 %.
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