Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior right IJ central venous catheter is no longer visualized . There is patchy opacity at the left lung base . Elsewhere , the lungs are clear . The cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
Patchy left basilar opacity , potentially due to a developing infection . Consider PA and lateral .