Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are within normal limits and without change since the baseline radiograph of ___ , as well as older radiographs dating back to ___ . Nonspecific pleural and parenchymal scarring are present at the left lung base adjacent to the lateral costophrenic sulcus . Additionally , there is apparent diffuse bronchial wall thickening present .
    OUTPUT:
    
1 . Diffuse bronchial wall thickening , which may be due to chronic or acute bronchitis . 2 . Localized pleural and parenchymal scarring at left lung base , without change from prior studies .