Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , causing bronchovascular crowding . It is impossible to exclude a pneumonia in the right lung . No evidence of pleural effusion , or pneumothorax . Cardiomediastinal and hilar silhouettes and pleural surfaces are normal . Lower thoracic spinal stimulator noted .
    OUTPUT:
    
Low lung volumes cause bronchovascular crowding and may be responsible for simulating interstitial infiltration particularly in the right lung , making it impossible to exclude a pneumonia . No pneumothorax . New wall new