Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are low lung volumes , which accentuate the basilar bronchovascular markings . There is bibasilar atelectasis . Slight blunting of the right costophrenic angle is likely due to low lung volumes . The cardiac and mediastinal silhouettes are stable given differences in patient position and low lung volumes .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .