Fig. 2

Preoperative Enhanced Chest CT Findings. a: Plain film: Occupation of the right main bronchus and right lung, leading to total atelectasis of the right lung. b: Mediastinal window: Total atelectasis of the right lung, rightward shift of the mediastinum, and right pleural effusion. c: Lung window: Occupation of the right main bronchus and right lung, thickening of the right main bronchial wall, lumen obstruction, atelectasis of the right lung, and increased and disordered markings in the left lung