Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are unremarkable . Lungs are hypoinflated , accentuating the pulmonary vasculature , with mild bibasilar atelectasis . No focal consolidation is present . Pleural surfaces are clear without effusion or pneumothorax . Medial lung apices are obscured by the patient 's chin projecting over this region . No distracted rib fracture is identified .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . No acute cardiopulmonary abnormality . No distracted rib fracture , though dedicated rib series may be helpful if there is focal concern .