Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiograph demonstrates a left chest port , its tip which terminates within the superior vena cava superiorly , unchanged in position . Lungs are without a focal consolidation convincing for pneumonia . Cardiomediastinal and hilar contours are stable . Blunting of the left costophrenic angle may reflect combination of atelectasis and / or scarring . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No opacity convincing for pneumonia .