Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Midline sternotomy wires and prosthetic cardiac valve again noted . There are overlying EKG leads . The heart remains markedly enlarged . Hila appear congested . There is no overt edema , large effusion or pneumothorax . No convincing evidence for pneumonia . Mediastinal contour is unchanged with dense aortic calcification . Bony structures are intact .
    OUTPUT:
    
Stable cardiomegaly with hilar congestion .