Graft Replacement of Kommerell Diverticulum and In Situ Aberrant Subclavian Artery Reconstruction.

Background: This study aimed to evaluate the early and long-term outcomes of graft replacement of Kommerell diverticulum and in situ reconstruction of aberrant subclavian arteries in adults.
Methods: Seventeen patients, 6 symptomatic and 11 with right aortic arch, underwent open repair of Kommerell diverticulum from October 1999 to September 2017. Two of these patients underwent open surgical treatment of a ruptured aneurysm. Surgical indications were dilatation of Kommerell aneurysm (n = 9), the presence of a nondissecting aneurysm with Kommerell diverticulum (n = 6), acute type A aortic dissection (n = 1), and complicated acute type B aortic dissection (n = 1). Ten patients underwent total arch replacement and descending aorta replacement through a thoracotomy. Five patients underwent arch replacement and in situ reconstruction through a median sternotomy. All patients except 1 also underwent in situ reconstruction of their aberrant subclavian artery.
Results: In-hospital death occurred in 1 patient (5.9%), who underwent total arch replacement for a ruptured aneurysm. Permanent neurologic deficit did not occur in any patient, whereas transient neurologic deficit occurred in 2 patients (11.8%). Five- and 10-year survival rates were 85.2 ± 9.8% and 75.8 ± 12.5%, respectively. There was no symptom recurrence or stenosis of the reconstructed subclavian arteries.
Conclusions: Early outcomes of graft replacement of Kommerell diverticulum and in situ aberrant subclavian artery reconstruction were acceptable. As for long-term outcomes, symptomatic improvement and an excellent patency rate among reconstructed aberrant subclavian arteries suggest that in situ surgical repair is an effective treatment option.
(Copyright © 2019 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)