This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Radiology, Subject name: Radiology
Lucent Hemithorax is due to all the following except? 
Select and explain. 
A. Rotation, B. Swyer-James McLeod Syndrome, C. Foreign Body, D. Lung Collapse
D: Lung Collapse
Answer: D: Lung Collapse 
Explanation: *Lung Collapse causes a Opaque Hemithorax with Ipsilateral mediastinal shift Features of lung collapse: - Volume loss of lung with Opacification ( Not lucent) - Displacement of fissures - Ipsilateral shift of trachea and mediastinum - Bronchial Cut off sign - Crowding of Ribs - Elevation of ipsilateral hemidiaphragm - Compensatory hyperinflation of normal lobes