Fig. 3From: Bronchiolar adenoma with diffuse pulmonary nodules: a extremely rare case report and review of literatureImmunohistochemical staining of lung masses. a Positive expression of p63 in basal cells. b Positive expression of p40 in basal cells. c Positive expression of TTF-1 in luminal cells and some basal cells. d Positive expression of CK7 in luminal cells. e Positive expression of Napsin A in luminal cells. f The tumor showed a < 10% Ki-67 proliferation indexBack to article page