Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . As compared to prior study from 1 day ago , there is increased right lung base opacity . Preoperative right peritracheal widening expanded postoperatively and may reflect localized hematoma or fluid collection . It is unchanged since the recent postoperative radiograph of 1 day earlier . There is no pneumothorax or pneumomediastinum .
    OUTPUT:
    
Increased right base opacity , concerning for aspiration or developing pneumonia . Stable postoperative right peritracheal mediastinal widening as described above