Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lung volumes are low limiting assessment . Overlying EKG leads are present . Previously noted PICC line has been removed . There has been a prior left rib resection unchanged . The heart remains mildly enlarged . There is no definite evidence for pneumonia or overt CHF . Mild congestion is likely present . No large effusion or pneumothorax . Bony structures appear intact .
    OUTPUT:
    
Stable cardiomegaly , mild congestion . Limited exam .