This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Hypertranslucency of lung unilaterally is seen on all except – 
Select and explain. 
A. Pnetunothorax, B. Resection of mammary gland, C. Pulm art. obstruction, D. Pneumonectomy
D: Pneumonectomy
Answer: D: Pneumonectomy 
Explanation: Pneumectomy produces opaque hemithorax (not hypertranslucent).
Pneumothorax, resection of the mammary gland (mastectomy), and pulmonary artery obstruction (Pulmonary embolism) produce unilateral hypertranslucency.