Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes results in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal allowing for low lung volumes . No displaced rib fracture is seen . No clavicular abnormality is identified on this frontal radiograph .
    OUTPUT:
    
No evidence of acute intrathoracic injury . However , CT is more sensitive for detection of rib fractures .