Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate well expanded lungs . Cardiomediastinal and hilar contours are within normal limits . Lungs are clear without focal opacity convincing for pneumonia . There is no pleural effusion , pneumothorax , or pulmonary edema . Imaged osseous structures and upper abdomen are without an acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .