Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A background mild interstitial abnormality is unchanged from prior exams . Linear opacities in the right lower lung are stable , and likely due to chronic atelectasis or scarring . There is no pleural effusion or pneumothorax . Again noted is stable right - sided diaphragmatic eventration . The cardiac silhouette is severely enlarged , but unchanged from the prior exam . Atherosclerotic calcifications are noted in the aortic arch .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Stable severe cardiomegaly .