Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the preoperative examination , there is now cardiomegaly . As we can not exclude a pericardial effusion , clinical findings should dictate the need for cardiac ECHO . There is consolidation / atelectasis in the left lower lobe posteriorly . On the lateral film in the left lung base , there is an air - fluid level suggesting a small loculated pneumothorax . No apical pneumothoraces are present . A central line is present on the right , the tip projects over the proximal right atrium . There is persistent linear atelectasis in the left mid chest laterally in the region of the previously noted chest tube which was present on the study of ___ . There is a small area of linear atelectasis in the right midlung zone .
    OUTPUT:
    
1 . There is consolidation / atelectasis in the left lower lobe posteriorly . 2 . On the lateral film in the left lung base , there is an air - fluid level suggesting a small loculated pneumothorax . 3 . Postoperative changes are present . There is cardiomegaly . If there is clinical concern for pericardial effusion , then cardiac echo should be considered .