Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right IJ catheter is seen terminating within the low SVC , unchanged from prior . The lungs are well expanded and clear . The cardiomediastinal silhouette is stable . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Unchanged positioning of right IJ catheter . 2 . No evidence of pneumonia .