Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Markedly low lung volumes limits assessment at the bases . There is bibasilar atelectasis . The upper lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Markedly low lung volumes limits assessment at the bases . Otherwise no acute process .