Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided PICC tip terminates at the junction of the SVC / proximal right atrium . The cardiac silhouette size is normal . Mediastinal contours are unremarkable . There are low lung volumes with crowding of the bronchovascular structures . Patchy opacities in the lung bases likely reflect areas of atelectasis . No pleural effusion or pneumothorax is seen . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Low lung volumes . Patchy bibasilar opacities likely reflect atelectasis .