Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is severely enlarged , similar compared to the previous radiograph . The aorta is tortuous . Mediastinal and hilar contours are unchanged . There is mild pulmonary vascular congestion . Patchy opacities within the left lung base may reflect areas of atelectasis . No pleural effusion or pneumothorax is present . Multilevel moderate degenerative changes are again noted in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion and left basilar atelectasis .