Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP chest radiograph was obtained . There is mild improvement in moderate pulmonary vascular congestion . Moderate - to - severe cardiomegaly is unchanged . There is no new consolidation , large effusion , or pneumothorax . A right internal jugular dialysis catheter terminates in the right atrium . Biventricular and atrial pacing leads terminate in appropriate positions and connect with a left chest generator . Mediastinal clips and sternal wires are intact .
    OUTPUT:
    
Mildy improved pulmonary vascular congestion .