Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to ___ chest radiograph , there is pulmonary vascular congestion with cephalization and mild interstitial edema bilaterally . Segmental atelectasis of the left lower lobe is again noted . There is stable severe cardiomegaly . The right costophrenic angle is sharp . Left costophrenic angle is obscured by the large heart . The single lead left pectoral ICD and left ventricular assist device in situ . Median sternotomy wires are intact and aligned .
    OUTPUT:
    
1 . CHF with mild interstitial edema .