Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New opacity in the left lower lobe . The lungs are otherwise well inflated . Right lung is clear . Mild vascular congestion . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable .
    OUTPUT:
    
1 . Left lower lobe pneumonia . 2 . Mild vascular congestion .