Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . The lungs are clear . No focal consolidation effusion or pneumothorax is seen . The heart and mediastinal contours are normal . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .