Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Significant elevation of the left hemidiaphragm precludes evaluation of the cardiac contour and inferior left hilar contour . Per prior report this was present in ___ . Plate - like atelectasis is noted at the left lung base . The lungs are otherwise clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Significant elevation of the left hemidiaphragm , secondary to known paralysis by prior report , with associated plate - like atelectasis .