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
[{'content': 'Lucent Hemithorax is due to all the following except? \nSelect and explain. \nA. Rotation, B. Swyer-James McLeod Syndrome, C. Foreign Body, D. Lung Collapse', 'role': 'user'}, {'content': 'Answer: D \nExplanation: *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', 'role': 'assistant'}]