Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is persistent elevation of the right hemidiaphragm . Relatively low lung volumes are seen . There is persistent cardiomegaly . There may be minimal pulmonary vascular congestion without overt pulmonary edema . No pleural effusion or pneumothorax is seen . There is mild bibasilar atelectasis . The aortic knob is calcified . No pneumothorax is seen .
    OUTPUT:
    
Persistent elevation of the right hemidiaphragm , relatively low lung volumes . Bibasilar atelectasis . Possible minimal pulmonary vascular congestion without overt pulmonary edema . Enlargement of the cardiac silhouette .