Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Lung volumes are low with bronchovascular crowding in the lower lungs . No definite sign of pneumonia or CHF . No large effusion or pneumothorax . Heart size can not be assessed on the frontal view though appears within normal limits on the lateral view . Mediastinal contour is normal . Bony structures appear intact . Mild degenerative changes in the upper thoracic spine noted .
    OUTPUT:
    
Limited , negative .