Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs are hyperinflated . Linear opacity in the left upper lobe is compatible with scarring . There is mild peribronchial cuffing and airway wall thickening , most pronounced in the left lower lobe , suggestive of mild bronchitis , as seen on the previous CT . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes noted throughout the thoracic spine . Left - sided rib deformities are re - demonstrated .
    OUTPUT:
    
Findings suggestive of mild bronchitis , better assessed on the previous CT . No pneumonia .