Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest provided . Left chest wall pacer with two leads extending into the expected location of the right atrium and right ventricle are unchanged from prior exam . The lungs appear clear , though low lung volume limits the evaluation . No focal consolidation to suggest the presence of pneumonia or signs of aspiration . No pleural effusion or pneumothorax . Cardiomediastinal silhouette appears stable with top normal heart size . Bony structures are intact .
    OUTPUT:
    
No signs of pneumonia or aspiration .