Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Relatively low lung volumes are noted with secondary to the crowding of the bronchovascular markings . The patient is rotated to the left . Within this limitation , there is no change to the cardiomediastinal silhouette , which is within normal limits . Blunting of the lateral left costophrenic angle may be due to atelectasis .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .