Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to ___ radiograph , heart size remains normal and lobulated enlargement of the hila is unchanged . The latter could reflect enlarged pulmonary vessels related to history of pulmonary hypertension , likely with superimposed lymph node enlargement , especially on the right . Superimposed upon pre-existing basilar predominant interstitial abnormalities is an area of increased confluent opacification of the right lung base . There are no pleural effusions . Mild compression deformities are seen within the mid thoracic spine and appear unchanged . Deformities of right - sided ribs may be posttraumatic or postsurgical .
    OUTPUT:
    
Confluent right lower lobe opacification is concerning for pneumonia in the appropriate clinical setting . This is superimposed upon chronic basilar predominant interstitial lung disease .