Comment
Fistulas between the aorta and tracheobronchial tree are rare and
uniformly fatal if not surgically treated (1,2). More than 95% of
patients present with hemoptysis and greater than 50% with massive
hemoptysis (>400 mL); dyspnea and cough were also common
(1). These fistulas most commonly involve the left bronchial tree (3).
Macintosh et al noted 92% of cases involved the descending thoracic
aorta to left bronchial tree and 87% involved a thoracic aortic
aneurysm after graft repair (2).
Aorto-tracheal fistulas are very rarely described, with most cases
likely being lethal prior to any intervention (3,4). Allende et al
described a fistula between the trachea and aortic arch found on autopsy
in a patient with tracheal squamous cell carcinoma two years after
completing radiation therapy. He presented in cardiac arrest after
massive hemoptysis (3). Two cases of aorto-tracheal fistula following
repair of pulmonary artery sling and tracheoplasty in children are
reported, both successfully repaired via cardiopulmonary bypass and
repair with pericardial patch of the aortic arch. One tracheal defect
was also repaired with pericardial patch and the other with tracheal
reconstruction with cadaveric tracheal homograft (4,5).
To our knowledge, this is the first report of an aorto-tracheal fistula
successfully treated with a transverse aortic arch replacement and
complex tracheal repair using autologous pericardium with an omental
buttress.