Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath terminates in the low SVC without evidence of pneumothorax . Low lung volumes persist . No focal consolidation is seen . Re - demonstrated minimal bibasilar patchy opacities most likely represent atelectasis or overlap of vascular structures . No large pleural effusion is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Persistently low lung volumes . Subtle mild bibasilar opacities likely represent atelectasis or overlap of vascular structures . .