Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . The heart remains mildly enlarged . Lung volumes are low limiting assessment . No convincing signs of pneumonia or edema . There may be mild hilar congestion . No large effusion or pneumothorax . Mediastinal contour is normal . Bony structures are intact . Bilateral AC joint arthropathy noted . Fusion hardware projects over the C - spine .
    OUTPUT:
    
Stable mild cardiomegaly with mild hilar congestion .