Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single frontal chest radiograph was obtained with the patient in supine position . There is moderate diffuse interstitial edema with pulmonary vascular congestion . No focal consolidation or pneumothorax is seen . The heart remains mildly enlarged .
    OUTPUT:
    
Moderate interstitial edema and pulmonary vascular congestion consistent with volume overload .