Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hemidiaphragm is elevated , similar to prior exam . The lungs are well expanded and clear except for localized left basilar pleural and parenchymal scarring adjacent to thoracotomy site . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is stable in appearance with adjacent surgical clips in keeping with history of resection of a thymic mass .
    OUTPUT:
    
No acute cardiopulmonary process .