Fig. 3From: Fibrosing pneumonia – how to diagnose, and how to recognize the etiology?Two cases of UIP with cystic remodeling, in the upper panel also fibrosis and mucus accumulation within the lumina. In the lower panel the epithelial metaplasia is illustrated with cuboidal cells of bronchiolar origin, replacing the pneumocytes. H&E, bars 200 and 20 μmBack to article page