Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest demonstrate low lung volumes with mild bibasilar atelectasis . There is no focal consolidation concerning for pneumonia , pleural effusion . There may be mild pulmonary vascular congestion . No pneumothorax is present . The heart is top normal in size and the intrathoracic aorta is tortuous , which is stable since the prior study . Upper mid abdominal surgical clips are again noted .
    OUTPUT:
    
Possible mild pulmonary vascular congestion .