Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate - to - severe enlargement of the cardiac silhouette which is relatively unchanged compared to the prior study . The pulmonary vascularity is normal . The mediastinal and hilar contours are unremarkable . There are low lung volumes with minimal atelectasis in the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
No radiographic evidence for pneumonia or congestive heart failure .