Hybrid treatment of a giant coronary artery aneurysm in a patient with immunoglobulin G4-related disease.

A 62-year-old man was diagnosed with a giant coronary artery aneurysm associated with immunoglobulin G4 (IgG4)-related disease. He had previously undergone two thoracic operations with sternotomies and abdominal aortic aneurysm repair for IgG4-related aortopathy. We opted for hybrid open and endovascular repair to reduce risk and avoid complications of a resternotomy and extracorporeal circulation. This first successful case of hybrid repair of a giant coronary artery aneurysm shows that the procedure is safe and feasible in patients with IgG4-related vasculopathy. It is critical to carefully monitor these patients for the occurrence of new IgG4-related aneurysms and other manifestations of vasculopathy.