Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes resulting bronchovascular crowding . Small left - sided pleural effusion with adjacent atelectasis is new over the interval . Superimposed infection could be considered in the appropriate clinical setting . There is no overt pulmonary edema . The cardiomediastinal and hilar contours are unchanged . There is no pneumothorax .
    OUTPUT:
    
Small left - sided pleural effusion with adjacent atelectasis is new over the interval . Superimposed infection could be considered in the appropriate clinical setting .