Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are normal . Lungs are clear without evidence of pneumonia , pulmonary edema , or pleural effusions . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . No free air below the right hemidiaphragm .
    OUTPUT:
    
1 . No acute intrathoracic abnormality . 2 . No signs of pneumoperitoneum .