Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior left upper lobe atelectasis has resolved . There is no mild to moderate pulmonary edema . More confluent regions of opacity noted at the lung bases , right greater than left . Blunting of posterior costophrenic angle suggests small effusions . There is moderate cardiac enlargement potentially progressed since prior .
    OUTPUT:
    
Cardiomegaly with mild to moderate pulmonary edema and small pleural effusions . More confluent right greater than left basilar opacities which could represent superimposed infection .