Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lungs are clear . Slight differences in appearance of the chest , when compared with prior , likely attributable to AP technique . No convincing evidence for pneumonia or edema . No large effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings .