Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine chest radiograph demonstrates clear lungs bilaterally . No focal consolidation is identified . Cardiomediastinal and hilar contours are within normal limits . There is no evidence of pneumothorax , pleural effusion , or pulmonary edema . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No acute intra thoracic abnormality .