Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . A left - sided AICD device is noted with leads terminating in the right atrium and right ventricle , unchanged . Mild to moderate cardiomegaly persists . Aortic knob calcifications are re- demonstrated . Lung volumes are low . There is crowding of bronchovascular structures without frank pulmonary edema . Dense retrocardiac opacification likely reflects aspiration , as seen on the previous CT , with a small left pleural effusion . Patchy right basilar opacity may also reflect a second area of aspiration or atelectasis . Remote right - sided rib fractures are noted . Multiple clips are seen in the right upper quadrant of the abdomen . Sclerotic lesion in the left humeral head may reflect an enchondroma or bone infarct .
    OUTPUT:
    
1 . Dense retrocardiac opacification most likely reflective of aspiration and small left pleural effusion , as seen on the previous CT of the thoracic spine . 2 . Probable additional area of aspiration in the right lung base versus atelectasis .