Fig. 2

Image findings of case 2. a, b Preoperative anterior-posterior and lateral X-rays of the whole spine in supine position shows severe scoliosis with exaggerated cervicothoracic hyperlordosis. c Preoperative contrast enhanced computed tomography at T3/4 level demonstrates flattened tracheal lumen between innominate artery and anteriorly deviated vertebra. d, e Postoperative anterior-posterior and lateral X-rays of the whole spine in supine position reveals well-corrected cervicothoracic alignment. f Postoperative computed tomography demonstrates the improvement of tracheal stenosis. The white arrow in (c) indicates the innominate artery compressing the trachea from the anterior aspect. The white arrowheads in (c) and (f) indicate the tracheal lumen