Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are relatively normal . Chronic , progressive , left pleural thickening is responsible for the opacity projecting over the left lung , seen on a series of CT scans , most recently PET - CT ___ . Interstitial abnormality in the right lung may have progressed , reflected in right hilar bronchial cuffing . The heart is not enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Chronic left fissural , pleural abnormality . Either progression of mild interstitial abnormality or new bronchial inflammation .