Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There appears to be an interval increase in opacification within the left lower lobe . No other focal opacities are seen . The lungs appear otherwise unremarkable . There is no evidence of pleural effusion or pneumothorax . The heart size is normal . The hilar and mediastinal contours are unremarkable . Again seen are degenerative changes in the mid thoracic spine .
    OUTPUT:
    
Left lower lobe pneumonia . These findings were discussed with Dr . ___ by Dr . ___ at 4 : 57 pm by telephone on the day of the exam .