Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No new focal parenchymal opacity to suggest pneumonia is seen . A subtle opacity seen at the left base on the frontal radiograph has been present on prior examinations including the exam of ___ and ___ . Additionally , suggestion of opacity in the region of the inferior lingula is seen on the lateral radiograph , again unchanged . In correlation with prior CT examination of ___ , these findings could represent chronic atelectasis / pleural thickening . No pleural effusion or pneumothorax is seen . The heart size is normal .
    OUTPUT:
    
1 . No new focal parenchymal opacity to suggest pneumonia . 2 . Findings suggestive of chronic atelectasis and / or pleural thickening in the inferior lingula .