Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a peribronchial opacity in the right lower lobe . The left lung is hyperinflated suggestive of chronic pulmonary disease . Mild blunting of the right costophrenic angle is chronic and similar to prior exams , likely representing scarring . Calcification of aortic arch is once again demonstrated . Mediastinal and hilar contours are normal . Stable degenerative changes and chronic compression fractures of thoracic spine .
    OUTPUT:
    
Right lower lobe pneumonia .