Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unchanged with mild leftward deviation of the trachea due to a known thyroid goiter again noted . Pulmonary vasculature is not engorged . Linear opacities within the lung bases likely reflect areas of atelectasis or scarring . No focal consolidation , pleural effusion or pneumothorax is demonstrated . Degenerative changes are again seen within the imaged spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .