Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes and a suboptimal inspiratory effort . Allowing for changes due to this , the cardiomediastinal silhouettes are stable and within normal limits . There is bibasilar atelectasis . There are no focal lung consolidations . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary abnormality .