Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal opacity occupying the right upper lobe is again seen , reflecting known non-small cell lung tumor . There is a small right - sided pleural effusion which does not appear significantly changed from prior chest CT . The cardiomediastinal and hilar contours are stable . There is no new focal consolidation . A curvilinear lucency several cm below the right hemidiaphragm likely reflects a small amount of bowel gas .
    OUTPUT:
    
1 . Right upper lobe opacity , likely reflecting known non-small cell lung cancer . 2 . Small right - sided pleural effusion not significantly changed since prior chest CT from ___ . 3 . No superimposed consolidation .