Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral upper lobe reticular and nodular opacities accompanied by upper lobe volume loss are similar to the prior radiograph of ___ . Heart size remains normal , and calcified mediastinal hilar nodes are unchanged . There is no evidence of pleural effusion or pneumothorax .
    OUTPUT:
    
Chronic upper lobe interstitial abnormality with associated volume loss is in keeping with sarcoidosis .