Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Basilar opacities that are similar to the prior exam and likely reflects chronic interstitial changes seen on the recent CT . Superinfection is difficult to exclude . The linear opacity in the left mid base is more prominent , and likely represents atelectasis . The apices of the lungs are clear . There is no pulmonary edema , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is normal . A left - sided Port - A - Cath is in unchanged position with the tip in the upper right atrium .
    OUTPUT:
    
Basilar opacities likely represent the known interstitial disease seen on the recent CT . Superinfection is difficult to completely exclude . Recommend clinical correlation .