Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath terminates in the low SVC without evidence of pneumothorax . There is bibasilar atelectasis / scarring . Right base opacity most likely relates to atelectasis , less likely pneumonia . No pleural effusion is seen . The cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Bibasilar atelectasis / scarring . Increased opacity at the right lung base felt to more likely relate to atelectasis rather than pneumonia .