Figure 3From: Usual interstitial pneumonia coexisted with nonspecific interstitial pneumonia, What’s the diagnosis?Microscopic features of the patient's lung upper lobe. Under low power microscope, some alveolar septum of apicoposterior segment of upper lobe(from where labeled “a” in Figure2 ) had more lymphocyte and plasmocyte infiltrated, alveolar wall was mild broadening, but absent evident of fibrous hyperplasia which looks like pattern of NSIP cellular type (A); Some alveolar wall had fibre hyperblastosis obviously , a few collagen deposited and lymphocyte infiltrated as picture of NSIP mix type (B) and fibrotic type (C) ; The fiber interval of subpleural aera of anterior segment (from where labeled “b” in Figure2 ) was thickening clearly, bronchiole epithelium had metaplasia and cystic fibrous gas cavity was formed (*), several cystic wall had small fibroblast foci (solid arrow), The appearance was extremely like UIP (D). ( H&E stain, Magnification:HE×40).Back to article page