Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . There is mild basilar atelectasis . No definite pneumonia or CHF . Cardiomediastinal silhouette is normal . Slight prominence of the right pulmonary hilum is stable from multiple prior studies , with intervening CT revealing no acute pathology . No pneumothorax . Old right rib deformities are noted .
    OUTPUT:
    
No acute findings in the chest .