Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Compared to prior examination , the patient has been extubated . Previously noted mild pulmonary edema has cleared . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic process . Interval clearing of mild edema .