Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic interstitial changes in the bilateral lungs , greatest at the bases , are largely unchanged in could be due to chronic pulmonary disease , vascular congestion , or both . The heart is mildly enlarged . No new focal consolidation concerning for pneumonia . Significant scoliosis of the thoracic spine is unchanged .
    OUTPUT:
    
Chronic interstitial lung changes could be due to chronic pulmonary disease , vascular congestion , or both . No focal consolidation concerning for pneumonia .