Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A persistent right hilar opacity is less conspicuous . Moderate pulmonary edema and moderate to severe cardiomegaly are unchanged . Small bilateral pleural effusions . No pneumothorax .
    OUTPUT:
    
A right hilar opacity is less conspicuous on today 's examination . However , this still could represent pneumonia in the correct clinical setting . Alternatively this may represent engorged pulmonary vessels . Moderate pulmonary edema and persistent bilateral pleural effusions .