Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates a left chest MediPort with its tip unchanged in position at the cavoatrial junction . The lungs are clear without pleural effusion or pneumothorax . The cardiac silhouette is normal in size , the mediastinal contours are normal . Embolic coiling material was unchanged in appearance in the right upper quadrant , as is a single surgical clip .
    OUTPUT:
    
No evidence of acute chest abnormality .