Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of right internal jugular central venous catheter extends to the mid SVC . Increasing patchy and opacities in the left lower lung zone medially . No pleural effusion or pneumothorax identified . The size of the cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Increasing patchy opacities in the medial left lower lung zone may reflect pneumonia .