Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrate clear lungs with no focal consolidation or nodules identified . Tortuosity of the aorta is seen . Hilar mediastinal and cardiac silhouettes within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Within the limits of study technique , no evidence of cardiothoracic abnormality . CT may be a more sensitive test to evaluate for metastatic disease process .