Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is chronic severe cardiomegaly and mild pulmonary vascular congestion . A right sided pacing device and its leads are in stable position over the right atrium and ventricle . Previously noted right hilus abnormality and small pulmonary nodules are not well seen on this conventional radiograph . .
    OUTPUT:
    
Chronic severe cardiomegaly and mild pulmonary vascular congestion .