Diagnosis and treatment of endoleaks after endovascular repair of thoracic and abdominal aortic aneurysms.

A common complication of endovascular repair of a thoracic or abdominal aortic aneurysm (TEVAR - EVAR) is an endoleak occurring in up to 30% of cases. Endoleak is defined as the persistence of blood flow outside the lumen of the endoprosthesis, but within the aneurysm sac and can be classified into 5 categories, depending on the blood flow into the aneurysm sac. Typical features of the different types of endoleaks are discussed as well as the imaging modalities to detect and classify an endoleak and the diverse (endovascular) treatment options.