Aorto-bronchial fistula masquerading as haematemesis: a rare late complication of thoracic aortic vascular grafts.

Aorto-bronchial fistula is an exceedingly rare pathology with high mortality. Late vascular graft infection may occur secondary to haematogenous seeding of bacteria from a distant source such as gastrointestinal infection. We present an unusual case of aorto-bronchial fistula masquerading as haematemesis in a patient with sigmoid diverticulitis, and review the pathophysiology, diagnosis, surgical and endovascular management of aorto-bronchial fistulas.