Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP chest radiograph demonstrates a left chest port , it s tip which terminates in the lower superior vena cava unchanged since prior study . The cardiomediastinal silhouette is stable relative to prior study . Overall appearance of the chest is unchanged , post treatment changes in the left hemi thorax better evaluated on CT chest dated ___ . Multiple small pulmonary nodules within the lungs are better appreciated on the prior examination . No focal opacity convincing for pneumonia is identified . There is no pneumothorax or large pleural effusion .
    OUTPUT:
    
No focal opacity convincing for pneumonia . Overall chest is similar in appearance relative to prior examination dated ___ .