Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 09 :24 is submitted .
    OUTPUT:
    
The heart remains enlarged . The aorta appears dilated which may be related to patient positioning and should be assessed on followup imaging . There is mild perihilar vascular congestion but no overt pulmonary edema . No pleural effusions . No pneumothorax .