Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is normal . The hila and pleura are unremarkable . The lungs are hyperexpanded with flattening of the left hemidiaphragm and increased AP diameter suggestive of chronic lung disease . On PA imaging there appears to be a subtle opacification of the right lower lung that corresponds with increased opacification overlying the the cardiac silhouette on lateral imaging which may indicate a developing right middle lobe pneumonia . There is a 5 mm right upper lobe nodule stable since ___ study . No pleural effusions or pneumothorax are seen .
    OUTPUT:
    
1 . Subtle opacification of the right middle lobe which may indicate a developing pneumonia . 2 . Hyperexpanded lungs with increased AP diameter consistent with chronic lung disease . 3 . Stable 5 mm right upper lobe nodule .