Tracheal Shift
Trachea is index of upper mediastinal position. The pleural pressures on either side determine the position of the mediastinum. The mediastinum will shift towards the side with relatively higher negative pressure compared to the opposite side. Tracheal deviation can occur under the following conditions:
Deviated towards diseased side
Atelectasis
Agenesis of lung
Pneumonectomy
Pleural fibrosis
Deviated away from diseased side
Pneumothorax
Pleural effusion
Large mass
Mediastinal masses
Tracheal masses
Kyphoscoliosis