Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is diffuse interstitial abnormality with predominance in the upper lobes consistent with patient 's known history of sarcoidosis . The previously seen opacity at the left base is no longer present and was likely due to artifact . There is no definite focal consolidation , pleural effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . Bony structures are intact .
    OUTPUT:
    
Diffuse interstitial lung disease with an upper lobe predominance consistent with patient 's known history of sarcoidosis without definite worsening . No focal opacity .