Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours unremarkable . Pulmonary vasculature is not engorged . Streaky opacities in the lung bases may reflect bronchial wall thickening and bronchitis . No focal consolidation , pleural effusion or pneumothorax is seen . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Streaky bibasilar opacities may reflect bronchial inflammation or infection , without focal consolidation .