Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Again seen is a small - to - moderate right pleural effusion , similar in size compared to ___ . Vague retrocardiac opacity , difficult to exclude pneuomonia . Since the prior study , there is significant resolution of pulmonary edema . Lungs are hyperinflated . No left pleural effusion . Radiation changes in the right paramedian lungs are unchanged .
    OUTPUT:
    
Small to moderate chronic right pleural effusion . Stable cardiomegaly . Vague retrocardiac opacity , difficult to exclude pneuomonia .