We report a rare case of left main coronary artery stent migration in a young patient with Takayasu arteritis, first identified intraoperatively using transoesophageal echocardiography (TOE). The protruding stent was visualised in real time on 2D and 3D TOE. The patient underwent urgent coronary artery bypass grafting with good clinical outcome. This case highlights the diagnostic value of intraoperative TOE in identifying coronary complications in large-vessel vasculitis.