Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are mild bibasilar opacities likely representing atelectasis . The upper lung fields are clear . A more focal 9 x 4 - mm nodule is noted overlying the left lower lobe . There is likely moderate cardiomegaly . A 2 lead pacemaker is noted . There is mild cephalization of vascular sheath suggesting minimal increased central venous pressures . No acute fractures are identified . There is no pleural effusion or pneumothorax . Moderate degenerative changes are noted at the bilateral glenohumeral joints .
    OUTPUT:
    
1 . Mild bibasilar opacities suggesting atelectasis . No acute cardiopulmonary process otherwise identified . 2 . 9 x 4 - mm nodule is noted overlying the left lower lobe . Further characterization with a dedicated CT is recommended . 3 . Moderate cardiomegaly .