Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post left upper lobectomy , with expected persistent left lung volume loss and shift of mediastinal structures . The cardiac , mediastinal , and hilar contours are unchanged , allowing for differences in technique and rotation of the patient . Biapical scarring is again seen . There is no pneumothorax or new consolidation .
    OUTPUT:
    
Post left upper lobectomy changes , with no superimposed acute intrathoracic process detected .