Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy , CABG , and stent placement . Moderate cardiomegaly is re - demonstrated . The aorta is diffusely calcified . There is mild pulmonary vascular congestion , slightly improved in the interval . Streaky opacities in the left lung base likely reflect areas of atelectasis . No large pleural effusion or pneumothorax is present , but a small left pleural effusion may be present . . Multiple clips are noted within the upper abdomen , more so on the left . Mild to moderate multilevel degenerative changes are demonstrated in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion and left basilar atelectasis . Probable small left pleural effusion .