Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Right subclavian catheter again noted in unchanged position . There is a 3 cm rounded opacity projecting over the left upper lung , more conspicuous than on outside hospital exam and new from ___ exam . Bibasilar atelectasis , right greater than left with mild elevation of the right hemidiaphragm noted . Cardiomediastinal silhouette is stable . No large effusion or pneumothorax . No convincing signs of free air below the right hemidiaphragm . Bony structures are intact .
    OUTPUT:
    
1 . Right upper lobe mass measuring approximately 3 cm for which CT chest recommended for further assessment . 2 . No evidence of free air below the right hemidiaphragm .