Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There is no focal consolidation , pleural effusion or pneumothorax identified . Subsegmental atelectasis is demonstrated within the right middle lobe and likely both lower lobes . There is no acute osseous abnormality . Mild degenerative changes are noted in the mid thoracic spine .
    OUTPUT:
    
No radiographic evidence for pneumonia .