Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding . There is no pneumothorax , pleural effusion , pulmonary edema , or focal consolidation . There is no displaced rib fracture . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . Low lung volumes . No evidence of acute cardiopulmonary process . 2 . No displaced rib fracture .