Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight blunting of the posterior costophrenic sulcus may represent atelectasis or small effusion . There is no focal consolidation , pulmonary edema , or pneumothorax . A left pigtail oral dual - chamber pacemaker and its leads project in unchanged location . Mild to moderate cardiomegaly is slightly progressed compared with ___ . Mild scoliosis is unchanged .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Left posterior costophrenic sulcus atelectasis or small effusion .