Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . There is redemonstration of right - sided pacemaker with associated right atrial and right ventricular leads . Heterogeneous opacities in the left lower lobe are highly concerning for pneumonia . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
Left lower lobe pneumonia .