Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well - expanded lungs . The right pulmonary opacities have improved since previous imaging . The size of the hydropneumothorax at the right apex has diminished since prior imaging . There is also improvement of the subcutaneous and intramuscular gas seen on the right side of the body . The left lung remains clear . Cardiomediastinal silhouette appears unchanged .
    OUTPUT:
    
Improving right apical hydropneumothorax . Improving right lung opacities . Improving subcutaneous and intramuscular air .