Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph demonstrates a right chest port , its tip which terminates high within the superior vena cava , unchanged in position relative to examination dated ___ . Lungs are without a focal consolidation . Linear atelectasis and or scar is noted in the right mid lung region . There is no large pleural effusion , pneumothorax , or evidence of pulmonary edema . Cardiomediastinal and hilar contours are stable in configuration .
    OUTPUT:
    
No evidence of pneumonia .