Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left upper chest pacer device with single associated right ventricular lead is seen in appropriate position . There is enlargement of the cardiac silhouette which is compatible with at least moderate cardiomegaly . Centrally predominant diffuse interstitial prominence is likely reflective of mild pulmonary vascular congestion . There is no frank pulmonary edema . Lateral radiographic view is significantly limited by underpenetration , likely secondary to body habitus . There is no focal lung consolidation . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Moderate cardiomegaly . Centrally predominant diffuse interstitial prominence , compatible with mild pulmonary vascular congestion without frank pulmonary edema .