The cause of homogenous opacity on X-ray is all except –: (A) Pleural effusion, (B) Diaphragmatic Hernia, (C) Massive consolidation, (D) Emphysema
Answer is D. Emphysema produces blackening (not opacity) due to increased air.
Homogeneous opacity is produced by consolidation, pleural effusion, hemothorax and diaphragmatic hernia.