Fig. 3

a Chest computed tomography (CT) reveals a left pleural effusion (mediastinal window). Although a small amount of right pleural effusion remained (yellow arrows), perivertebral soft tissue thickening has improved 2 months postoperatively. b Chest CT shows the incomplete fusion of the grafted bone (white arrow) but there is no evidence of progressive vertebral body destruction or spinal canal stenosis (bone window)