Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , new patchy opacities are seen in the mid and lower lung base , correlating to the left lower lung on lateral view , concerning for infection . The right lung is essentially clear . The tip of the right Port -a - Cath is seen in the low SVC . The heart size is normal . No pneumothorax .
    OUTPUT:
    
Left lower lobe pneumonia .