Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right Port - A - Cath is unchanged in position with its tip terminating at the cavoatrial junction . The lungs are mildly hyperinflated . There is minimal scarring at the base of the right lung . There is no evidence of pneumonia . Again seen is a small right lower lobe nodule , unchanged in appearance from the prior chest radiograph . The cardiomediastinal silhouette and hilar contours are normal . The pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia or pulmonary edema .