Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pectoral pacer leads terminate in the right atrium and right ventricle , as expected . There has been no significant interval change compared to the prior chest radiograph on ___ . Right lung is essentially clear . Dense left retrocardiac opacity is similar , and may represent atelectasis or infection in the appropriate clinical setting . A small pleural effusion is present on the left . No pneumothorax or pulmonary edema . Moderate cardiomegaly is stable . Dual lead right - sided pacer remains in place . Surgical clips in the lateral left breast consistent with prior lumpectomy for cancer .
    OUTPUT:
    
1 . No interval change in left retrocardiac opacity may represent atelectasis or infection in the appropriate clinical setting . 2 . Small left pleural effusion .