Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lung is clear . The patient is status post left lower lobectomy . There is slight elevation of the left hemidiaphragm , unchanged compared to the prior exam . Again seen are retrocardiac and lateral left basilar opacities unchanged compared to the prior exam and may be secondary to scarring . There is no focal consolidation or pneumothorax . The cardiomediastinal silhouette is stable . There are calcifications of the aortic knob . The osseous structures are again notable for thoracotomy changes ; the left sixth rib is not seen posteriorly .
    OUTPUT:
    
No significant interval change compared to the study performed earlier on the same day .