Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right atrial and ventricular pacemaker leads course in expected position . Moderate cardiomegaly is unchanged . Left anterior descending coronary artery stent is present . Increased bibasilar opacities , with discoid morphology . No pleural effusions or pneumothorax . Mild acromioclavicular arthropathy and multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . Increased bibasilar opacities may represent atelectasis or aspiration . 2 . Moderate cardiomegaly .