Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral upright chest radiograph demonstrates no focal opacity convincing for pneumonia . Cardiomediastinal and hilar contours are within normal limits . There is no evidence of overt pulmonary edema . There is no pleural effusion or pneumothorax . Osseous structures demonstrate no acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .