Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are normal . There is no new focal airspace opacity worrisome for pneumonia . Small biapical nodules are re - demonstrated but better seen on recent CT . There is no pleural effusion or pneumothorax . The heart is not enlarged . The mediastinal structures are normal .
    OUTPUT:
    
No convincing evidence of pneumonia .