Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . New heterogeneous opacity of the left lower lung is consistent with left lower lobe pneumonia . Right lung volume loss status post thoracotomy is similar to prior exam . Chain sutures overlying the lateral right lung and right hilum , and scarring of the right lung base are unchanged . Heart size and cardiomediastinal contours are stable .
    OUTPUT:
    
1 . Left lower lobe pneumonia . 2 . Stable changes status post right thoracotomy with right upper lobe lobectomy and apical radiation fibrosis .