Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . Low lung volumes and right middle lobe scarring are unchanged . Lungs are otherwise clear without focal areas of consolidation . Heart is normal in size , and mediastinal contour is within normal limits . There is no pleural effusion and no pneumothorax . Position of right - sided Port - A - Cath with the tip near the cavoatrial junction is unchanged .
    OUTPUT:
    
No evidence of pneumonia .