Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath tip terminates in the low SVC . Mild cardiac silhouette enlargement is unchanged . A small hiatal hernia is also re - demonstrated . Mediastinal and hilar contours are similar . Low lung volumes results in mild crowding of bronchovascular structures and mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine . A metallic biliary stent is seen in the right upper quadrant of the abdomen .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis . No pleural effusion .