Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two vascular stents are again noted , the first in the superior vena cava and the second in the left brachiocephalic vein , unchanged . The cardiac silhouette is clearly enlarged , but stable compared to the prior study . The mediastinal and hilar contours are within normal limits . Mild calcification of the aortic knob is noted . There is pulmonary vascular congestion with mild pulmonary interstitial edema . No significant pleural effusion or pneumothorax is detected . Evaluation is limited due to difficult patient positioning secondary to pain with the patient 's arm obscuring the lateral radiograph .
    OUTPUT:
    
1 . Limited evaluation due to patient discomfort and limited positioning . Overall , stable appearance of the chest from ___ . 2 . Mild pulmonary vascular congestion and interstitial edema . 3 . Stable severe cardiomegaly .