Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left internal jugular central venous catheter is in the low SVC . The lungs are normally expanded and clear without evidence of pneumonia . Heart size is top normal likely exaggerated by low AP technique . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax
    OUTPUT:
    
No evidence of pneumonia .