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An Unexpected Right Neck Mass Appearing Before Central Venous Catheter Placement.

A 65-YEAR-OLD MAN with 3-vessel coronary artery disease presented to the authors’ institution for coronary artery bypass graft surgery. After anesthetic induction and endotracheal intubation, the patient was placed in the reverse Trendelenburg position and his head was turned to the left for insertion of a central venous catheter through the right internal jugular vein. A large mass (approximately 5 3 cm) was noted in the patient’s right neck above the right clavicle (Figs 1 and 2; Video clips 1 and 2). The mass was pulsatile and easily compressed. What is the diagnosis?