A 35-year-old coal worker presents with difficulty in breathing on exeion for last 2 years. CXR was performed. What does it show?

The CXR of Coal worker patient shows the presence of hyperinflation in lungs with a tubular appearance of the hea. Lungs appear relatively blacker with flattening of the diaphragm on both sides. The hea appears smaller as lungs are hyper-inflated. These findings are suggestive of emphysema.