Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright PA and lateral views of the chest reviewed and compared to the most recent prior study . The lungs are clear without focal consolidation , signs of acute congestive heart failure , pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal . There are no concerning osseous or soft tissue lesions .
    OUTPUT:
    
Normal chest radiograph , unchanged compared to the prior study .