Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs now appear clear except for minimal streaky density at the right base consistent with subsegmental atelectasis or scarring . The heart appears large but cardiac size may be exaggerated by AP technique . The aorta is mildly tortuous . Mediastinal structures are otherwise unremarkable . The bony thorax is grossly intact .
    OUTPUT:
    
The cardiac silhouette is prominent but the cardiac size may be exaggerated by AP technique . No active pulmonary disease .