Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable and unchanged . The lung volumes are low . Apart from subsegmental atelectasis in the right middle lobe , the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No radiographic evidence for pneumonia .