Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post CABG and MVR . Mild cardiomegaly is again persistent . Small bilateral effusions are stable to slightly decreased in size . Bibasilar opacities again persist and likely represent atelectasis . The right lower lobe parachymal changes are the sequelae of old trauma and are not changed . No focal consolidations worrisome for pneumonia . Old rib fractures are noted bilaterally .
    OUTPUT:
    
Small bilateral pleural effusions , mild cardiomegaly .