Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior exam , the lung volumes are lower . There are stable post - surgical changes in the right lung with linear scarring . The right pleural effusion appears to have resolved . Linear opacification at the left base is stable , and likely a combination of atelectasis and some pleural calcifications . There is no new opacity . There is no pulmonary edema or pneumothorax . The cardiomediastinal contour is within normal limits , and unchanged .
    OUTPUT:
    
Stable right - sided post-surgical changes and bibasilar atelectasis . No evidence of pneumonia .