Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were obtained . The lung fields are clear bilaterally without evidence of focal consolidation or pulmonary edema . No pneumothorax or pleural effusion . Cardiomediastinal silhouette is normal . Old right ribe deformity appears chronic . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .