Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes with resulting bronchovascular crowding . There has been interval development of an opacification at the right base , likely representing aspiration . Additionally , there is an area of increased opacification at the left base , which likely represents a combination of pleural effusion and atelectasis . The cardiomediastinal and hilar contours are unchanged . There is no pneumothorax .
    OUTPUT:
    
1 . Area of increased opacification at the right base likely represents aspiration . 2 . Increased opacification at the left base likely representing a combination of atelectasis and pleural effusion .