Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is similar moderate cardiomegaly . The aortic arch is calcified . The mediastinal and hilar contours appear unchanged . There are prominent indistinct central pulmonary vessels as well as a widespread mild interstitial process , which is suggestive of mild pulmonary fibrosis and that was seen previously predominantly in the right hemithorax , but with suspected superimposed vascular congestion . Opacities in the right infrahilar and left retrocardiac regions have improved substantially , but with persistent retrocardiac opacification and small suspected left - sided pleural effusion . Left basilar opacification is probably compatible with chronic atelectasis associated with a substantial hiatal hernia , however , which is hard to directly visualize on this study but which was shown on the prior CT . The bones appeared demineralized . There is exaggerated kyphosis along the mid thoracic spine , as seen previously , and bones are not well delineated . Suboptimally imaged on the lateral view only is the upper part of an abdominal aortic stent .
    OUTPUT:
    
Findings suggesting mild vascular congestion . Substantial improvement in right infrahilar opacity . Persistent retrocardiac opacity , but decreased ; although not entirely specific , probably explained by chronic atelectasis associated with a substantial hiatal hernia . Suspected small bilateral pleural effusions .