Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left - sided hemodialysis catheter , the tip of which projects over the right atrium . The cardiac silhouette is moderately enlarged . There is no appreciable pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No evidence for pneumonia . There is moderate cardiomegaly , unchanged . 2 . Interval placement of left IJ approach hemodialysis catheter , the tip of which is projecting over the right atrium .