Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs appear clear except for minimal streaky density consistent with subsegmental atelectasis or scarring . There is no pneumothorax . The heart appears large but cardiac size may be exaggerated by portable technique . The aorta is tortuous and calcified . Mediastinal structures are otherwise unremarkable . There are degenerative changes in the spine . Surgical clips are projected beneath the diaphragm .
    OUTPUT:
    
No active pulmonary disease . Prominent cardiac silhouette .