Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is post-CABG and MVR . Mild cardiomegaly is again seen . Small bilateral pleural effusions are present . There is no pneumothorax or focal consolidation . Bibasilar linear opacities likely reflect atelectasis . There is mild central pulmonary vascular prominence but no edema . Old healing right rib fractures are again seen .
    OUTPUT:
    
Small bilateral pleural effusions . No pulmonary edema .