Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are extensive fibrotic changes , predominant following the bilateral mid to lower lung this patient with reported history of sarcoidosis . The cardiac and mediastinal silhouettes are stable . Hilar contours are stable . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Grossly stable to slightly progressed extensive fibrotic changes bilaterally , in keeping with reported history of sarcoidosis . No definite focal consolidation to suggest pneumonia given the above findings .