Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An interstitial abnormality , most pronounced in the left midlung zone suggestive of a chronic interstitial lung disease . Clips are present overlying the left scapula . The cardiomediastinal silhouette is notable for calcifications of the aortic knob and a dilated ascending aorta . A small pneumomediastinum , present on a Chest CT ___ is not visible on today 's study ; if still present , it has not enlarged . There is no pleural effusion or pneumothorax . The imaged upper abdomen is unremarkable . Vascular clips denote prior left axillary surgery and the configuration of the soft tissues of the chest wall suggest prior mastectomy . Although no fracture is seen , conventional chest radiographs are not sensitive for detection of chest cage trauma . Regions where there are focal findings of possible trauma should be clearly marked and imaged with bone detail views .
    OUTPUT:
    
No acute cardiopulmonary process . Findings suggestive of chronic interstitial lung disease .