Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hemidiaphragm remains significantly elevated but is unchanged from prior exams . There are mild bibasilar atelectatic changes , but no evidence of pneumonia . The cardiomediastinal silhouette and hila are normal . There is no pleural effusion , no pneumothorax .
    OUTPUT:
    
No change from ___ . No acute process .