Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . The aorta is tortuous and demonstrates calcifications particularly at the aortic knob . There is minimal bibasilar atelectasis , but no focal consolidation , pleural effusion or pneumothorax is present . No overt pulmonary edema is seen , though there is mild crowding of the bronchovascular structures . Mild degenerative changes are noted within the thoracic spine . Degenerative changes are also seen within both acromioclavicular and right glenohumeral joints .
    OUTPUT:
    
Mild bibasilar atelectasis . Cardiomegaly without evidence for congestive heart failure .