Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded with changing appearance of right lower lobe opacification and focal nodular opacity at the level of the diaphragm . Mediastinal contours , hilar , and cardiac borders are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Right lower lobe opacity has not improved . 2 . Focal nodular opacity could represent consolidated infection or pulmonary nodule . 3 . Emphysema .