Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The lung volumes are low , though allowing for this , lungs appear clear without focal consolidation , effusion , or pneumothorax . The heart size appears top normal . Mediastinal contour is unremarkable . No pneumothorax or large effusion is seen . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly . Otherwise , normal .