Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port -A - Cath is re - demonstrated with tip in the proximal right atrium , unchanged . Lung volumes remain low with moderate enlargement of the cardiac silhouette appearing unchanged . Mediastinal and hilar contours are unremarkable . Crowding of the bronchovascular structures is present though no overt pulmonary edema is seen . Linear opacities in the right upper lobe are compatible with post radiation changes . Patchy and linear opacities in the lung bases likely reflect a combination of chronic interstitial lung disease and atelectasis . No new focal consolidation is present . Elevation of the right hemidiaphragm is again noted , and a subpulmonic effusion may be present . There is no new pleural effusion or pneumothorax . No acute osseous abnormality is visualized . Clips are seen in the right axilla , and the patient is status post bilateral breast reconstruction .
    OUTPUT:
    
Low lung volumes with linear and patchy bibasilar opacities likely reflecting a combination of chronic interstitial lung disease and atelectasis . Post radiation changes in the right upper lobe , unchanged . Probable right subpulmonic effusion accounting for the right hemidiaphragmatic elevation .