Fístula aortoentérica post-EVAR. Presentación de un caso y revisión de la literatura

Endovascular aneurysm repair (EVAR) is not immune to aorto-enteric fistulas (AEF), a rare and devastating high death rate complication. Pathogenesis is not clear, and may be attributed to graft migration, erosion, kinking, dislodging or adjacent organ injury due to mechanical forces, or aneurysm pressurisation, inflammation, infection and rupture. But AEF may appear despite accurate device placement or without stent or aortic failure in follow-up imaging studies. Symptoms are usually masked. A high level of suspiction, early recognition and treatment are essential for successful outcome. CT angiography is better than endoscopy for diagnosis. Surgical treatment consists of graft removal and direct aortic replacement or extra-anatomic bypass. A new case of post-EVAR AEF and a review of the literature reports a total o 32 cases. We emphasise the need for continued awareness in patients undergoing EVAR.