Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate no focal opacity convincing for pneumonia . Heart size is within normal limits . The hilar mediastinal contours are unremarkable . There is no pulmonary edema , pleural effusion , or pneumothorax . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute intrathoracic abnormality .