Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrate clear lungs with no focal opacity convincing for pneumonia . Heart size is top - normal . No evidence of pulmonary edema . There is no pleural effusion or pneumothorax . Visualized osseous structures demonstrate no acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .