Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs demonstrate clear lungs bilaterally . Cardiomediastinal and hilar contours are within normal limits . There is no evidence of pleural effusion , pulmonary edema , or pneumothorax . Imaged upper abdomen demonstrates left gastric band which projects over the left upper quadrant . There is no free subdiaphragmatic gas .
    OUTPUT:
    
No acute intrathoracic abnormality .