Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in size and density of lobulated , streaky opacities in the right upper and mid lung , compatible with postobstructive atelectasis lymphangitic spread from known non-small - cell lung cancer . The heart size is normal . A small right pleural effusion is possible . No pneumothorax . There is a somewhat ill - defined 7 mm nodular density projecting over the left mid lung which may represent either a new metastasis or nipple shadow .
    OUTPUT:
    
1 . Worsening non-small - cell lung cancer in the right upper lung since ___ . No evidence of drainable pleural effusion . 2 . Somewhat ill - defined 7 mm nodular density projecting over the left mid lung may represent either nipple shadow or new metastasis .