Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable compared to prior CT from ___ . Surgical chain suture is seen along the medial left lung , along with mediastinal surgical clips , unchanged from prior exams . There is a chronically elevated left hemidiaphragm with evidence of eventration , also unchanged . There is left basilar relaxation atelectasis . The lungs are otherwise clear without focal consolidation . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion . Thoracic spine degenerative changes are stable .
    OUTPUT:
    
1 . No acute cardiopulmonary abnormality . 2 . Unchanged postsurgical appearance of the left hemithorax status post thymoma resection , as above . 3 . Unchanged chronically elevated left hemidiaphragm .