Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post CABG . The film is slightly rotated . There is a small left apical pneumothorax . Interval widening of the mediastinal contours likely relates to the recent surgery . Right lower lobe and retrocardiac opacities are most consistent with atelectasis . There is no pulmonary edema or large pleural effusion . The cardiac contours are top - normal in size . There are new mediastinal wires in place .
    OUTPUT:
    
Small left apical pneumothorax . Worsening right basilar atelectasis .