Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Aortic knob calcifications are identified . The mediastinal and hilar contours are within normal limits . Lungs are hyperinflated with flattening of the diaphragms , suggestive of COPD . No pulmonary vascular engorgement is demonstrated . Streaky opacity in the right lung base likely reflects atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Hyperinflated lungs suggestive of COPD . Streaky right basilar opacity , likely atelectasis .