Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small right pleural effusion is stable compared to prior exam . Right lower lung base patchy opacity likely represents moderate basilar atelectasis . The LVAD is in unchanged position . A left pectoral pacemaker is seen with transvenous leads in the right ventricle . The left lung is essentially clear . Heart size is moderately enlarged . Median sternotomy wires are intact and well aligned . No pneumothorax . Mild pulmonary vascular congestion without frank pulmonary edema is seen .
    OUTPUT:
    
1 . Small right pleural effusion is stable compared to prior exam . 2 . Right lower lung base patchy opacity likely represents moderate basilar atelectasis .