Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant change compared to the prior exam . The lungs are well - expanded and clear . No focal pulmonary consolidation , pleural effusion , pneumothorax , or pulmonary edema . Normal heart size with normal cardiomediastinal contours . Normal appearance of the hila . No acute osseous abnormality . No intra-abdominal sub - diaphragmatic free air .
    OUTPUT:
    
Normal chest radiograph . No pleural effusion , pneumothorax , or evidence of pneumonia .