Hybrid Frozen Elephant Trunk for Single-Stage Kommerell Diverticulum and Type A Dissection Repair

Treatment of Kommerell diverticulum is challenging, often involving multistage repair to achieve successful exclusion of the aneurysmal diverticulum, division of the vascular ring to release compression, and reconstruction of the aberrant subclavian artery to maintain arm perfusion. A well-planned, elective repair remains the optimal scenario; however, emergency presentation can be extremely challenging, particularly in acute aortic dissection. We describe an innovative, single-stage approach using a novel multibranched hybrid arch frozen elephant trunk prosthesis to achieve complete repair of a Kommerell diverticulum and aberrant right subclavian artery in a patient who presented with an acute type A aortic dissection.