Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are infiltrates in the right mid lung and right lower lobe is increased pulmonary vascular redistribution and a small left effusion . There is also new retrocardiac opacity that could be due to volume loss or infiltrate . The heart size continues to be mildly enlarged sternal wires and mediastinal clips and pacemaker are unchanged .
    OUTPUT:
    
Right midlung and right lower lobe infiltrates , unchanged . New opacity in retrocardiac region .