Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The aortic knob is calcified . There is mild pulmonary edema noted with perihilar haziness and vascular indistinctness . Small bilateral pleural effusions are present , left greater than right , with bibasilar airspace opacities . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild congestive heart failure with small bilateral pleural effusions and bibasilar airspace opacities , likely reflecting atelectasis , though infection can not be excluded .