Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Three AP images through the chest were provided . The lungs are clear bilaterally . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion . No evidence of pneumothorax . Pulmonary vasculature is within normal limits . Osseous structures are without acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .