Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 11 :46 is submitted .
    OUTPUT:
    
Cardiac and mediastinal contours are stable . Lungs appear well aerated without evidence of focal airspace consolidation , pleural effusion or pneumothorax . Surgical clips are again seen in the region of the right superior mediastinum . Clips in the right upper quadrant consistent with prior cholecystectomy . Prominent amount of gas in the splenic flexure .