Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrates low lung volumes and bibasilar atelectasis . The heart is top normal in size , unchanged . Otherwise , the cardiomediastinal silhouette is unremarkable . There is no pleural effusion , pulmonary edema , pneumothorax or focal consolidation . No displaced rib fractures are identified .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis . No acute cardiopulmonary process . No displaced rib fractures .