Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate unchanged degree of cardiomegaly and stable appearance of large and tortuous intrathoracic aorta with large endovascular stent graft . The lungs are hyperinflated and there is relative flattening of the hemidiaphragms , not significantly changed since prior study . There is no pneumothorax . The costophrenic angles are not well seen on the lateral images , possibly reflecting trace bilateral pleural effusions or atelectasis .
    OUTPUT:
    
No acute cardiopulmonary process .