Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated and the diaphragms are flattened , consistent with COPD . Heart size at the upper limits of normal . There is subsegmental atelectasis and / or scarring at both lung bases . This likely accounts for the small focal patchy opacity seen at the left lung base laterally , which is similar to the ___ radiograph . Again noted is curvilinear scarring , possibly a bulla , posterior to the heart on the lateral view . No CHF , focal consolidation , gross effusion , or pneumothorax detected . Mild anterior wedging of an upper thoracic vertebral body , question T4 , is unchanged compared with ___ . Mild anterior wedging of several lower thoracic vertebral bodies is better visualized on targeted review of a ___ CT scan .
    OUTPUT:
    
COPD , when bibasilar atelectasis and / or scarring . No focal infiltrate identified to suggest pneumonia . Otherwise , no acute pulmonary process identified .