Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post left upper lobectomy . Secondary volume loss seen in the left hemithorax and superior retraction of the left hilum . The lungs remain clear of consolidation or effusion . The cardiomediastinal silhouette is within normal limits . Mitral annular calcifications are identified . No acute osseous abnormality identified .
    OUTPUT:
    
No acute cardiopulmonary process .