A 78-year-old female was emergently transferred to our tertiary cardiac intensive care unit with a decreased level of consciousness, shock, and a new, pulsatile, 8 × 8-cm mass of the left anterior chest wall (Fig. 1). A continuous to-and-fro murmur was audible over the mass. She had a history of lung cancer treated 7 years earlier with resection of the left upper lobe and chest wall, which was reconstructed with a Gore-Tex graft.