Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable in appearance . Lung volumes are increased . No focal areas of consolidation are present within the lungs , and there are no pleural effusions . Bones are diffusely demineralized , and note is made of multiple healed right rib fractures .
    OUTPUT:
    
Hyperexpanded lungs in keeping with COPD . No evidence of active pulmonary infection .