Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath tip terminates in the lower SVC . The cardiac silhouette size is within normal limits . Compared to the prior chest radiograph , there is improvement in aeration of the right infrahilar region , with continued small right , and small to moderate sized left , bilateral pleural effusions , similar in size compared to the prior exam . Retrocardiac opacity likely reflects atelectasis and is relatively unchanged . Emphysematous changes are most pronounced in the lung apices . No pneumomediastinum is definitively noted , and there is no pneumothorax . Compression deformity of a mid thoracic vertebral body is unchanged . Multiple clips are demonstrated projecting over the left posterior chest .
    OUTPUT:
    
No definite evidence for pneumomediastinum or pneumothorax . Interval improvement in aeration of the right infrahilar region , with continued bibasilar airspace opacities likely reflecting atelectasis , though infection can not be excluded . Bilateral pleural effusions , small on the right and small to moderate on the left , are similar compared to prior exam .