Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph was provided . Overlying EKG leads are present . The lungs are clear bilaterally . No focal consolidation to suggest pneumonia . No evidence of pulmonary edema , effusion or pneumothorax . The cardiomediastinal silhouette appears stable . There is biapical pleuroparenchymal scarring again noted . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .