Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs of the chest demonstrate mild interval improvement in the left lower lung field opacity seen on the previous radiograph . Again seen is the eventration of the left hemidiaphragm with a prominent gastric bubble . There is prominence of the pulmonary vasculature which may be due to poor inspiratory effort during the examination . Stable chronic cardiomegaly is again noted .
    OUTPUT:
    
Interval improvement in the left lower lobe opacity seen on the previous chest radiograph . No new focal opacity is seen .