Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest shows overall little change from prior . Again seen is mild pulmonary edema and stable cardiomegaly . Small bilateral pleural effusions with resultant atelectasis are unchanged . Again visualized is a stable retrocardiac opacity . There is no pleural effusion , pneumothorax or new consolidations .
    OUTPUT:
    
Unchanged mild pulmonary edema with a persistent left retrocardiac opacity and small bilateral pleural effusions .