Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Consolidation in the left lower lobe and lingula has slightly worsened . A subtle opacity in the periphery of the right middle lobe has improved . Bilateral upper lobe pleural and parenchymal scarring appears similar to the prior study as well as left lateral pleural thickening . Healed rib and sternal fractures are noted , and unchanged compression deformities are evident within the thoracic spine .
    OUTPUT:
    
Slight worsening of left lower lobe and lingular consolidation which has waxed and waned on serial radiographs since ___ . Although possibly due to chronic or recurrent aspiration , CT of the chest may be helpful to evaluate for possible endobronchial abnormality or bronchiectasis if warranted clinically .