Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild cardiomegaly . Pulmonary vascular congestion is mild . The aorta is unfolded and the aortic knob is calcified . There are bibasilar opacities . No pleural effusion or pneumothorax .
    OUTPUT:
    
Mild pulmonary vascular congestion is new since ___ . Bibasilar opacities are most consistent with atelectasis .