Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild pulmonary vascular congestion . There is increased retrocardiac opacity also seen on the lateral view . Elsewhere , there is no focal consolidation . There is mild cardiomegaly . No acute osseous abnormalities .
    OUTPUT:
    
Pulmonary vascular congestion and cardiomegaly . Retrocardiac opacity potentially infection versus atelectasis