Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation or pneumothorax . There is mild cardiomegaly which is stable . Streaky opacities seen only on the lateral likely due to atelectasis . There are minimal bibasilar pleural effusions which are much improved from the prior CT . Osseous structures are notable for spinal fixation hardware . There is a nerve stimulator seen in the left lateral chest wall .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Significantly improved small bilateral pleural effusions .