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What is an endograft?

Doctors perform minimally invasive endovascular procedures to treat aortic aneurysms, using cloth-covered wire mesh tubes called endografts to replace the aorta from within. This is essentially putting a new pipe inside an old, broken-down pipe. However, when critical branches come off the broken-down pipe, the endografts do not permit blood to flow into these branches. To keep blood flowing into these important branches, doctors often have to perform complex and more invasive rerouting procedures. 

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