Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate pulmonary edema has substantially improved . The small right pleural effusion has decreased , but the layering small left pleural effusion is not appreciably changed . There is no pneumothorax . There is stable mild cardiomegaly and tubular opacities projecting over the heart , which are likely due to coronary calcifications . Stable retrocardiac opacification is likely due to a combination of pleural effusion and atelectasis or pneumonia .
    OUTPUT:
    
Improved pulmonary edema , which is now mild . Stable left lower lobe opacity , which may be due to atelectasis or pneumonia . Decreased small right pleural effusion . Stable small left pleural effusion . Stable mild cardiomegaly .