Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall catheter terminates is a superior cavoatrial junction . Heart size is normal . Heterogeneous opacities of the left lung base could represent pneumonia in the appropriate clinical setting . Linear opacities at the right lung base are reflective of atelectasis . No large pleural effusion or pneumothorax .
    OUTPUT:
    
Heterogeneous opacities at the left lung base are concerning for pneumonia given the clinical history .