Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Transvenous pacer lead tip is in standard position and right ventricle . Patient is status post CABG with sternal wires and surgical clips noted . There are linear opacities in the bilateral lower lobes which is unchanged compared to chest radiograph ___ and likely represents scarring . There is no focal consolidation , pneumothorax , or pleural effusion . Moderate cardiomegaly is punched . Elevation of the left hemidiaphragm appears unchanged from comparison study . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . Linear opacities in the bilateral lower lobes are unchanged from chest radiograph ___ and likely represents scarring versus less likely atelectasis . 2 . No focal consolidation . 3 . Stable moderate cardiomegaly .