Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . Mediastinal and hilar contours are unchanged . The pulmonary vasculature is normal . Apart from minimal atelectasis in the left lower lobe , the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is demonstrated . Pleural thickening within the apices bilaterally is unchanged . Surgical clips within the neck indicate prior thyroidectomy . There are no acute osseous abnormalities .
    OUTPUT:
    
No radiographic evidence for pneumonia .