Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine radiograph of the chest demonstrates a normal cardiomediastinal silhouette . The pulmonary vasculature is unremarkable . No focal consolidation is seen . No definite fracture is identified . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic abnormality .