Clinicopathological Analysis of Bronchiolar Adenoma Lined Purely by Mucinous Luminal Cells

Figure 2

HE staining. Overall view of tumor (a) (40x). Double-layer cell structure, the cavity surface was pure columnar mucinous cells (b) (100x). There was a small amount of papillary (c) (black arrow, 40x), with abundant intracellular and extracellular mucus (c) (black star). Continuous basal cells (d) (black arrow, 200x) can be seen. Basal cells in some areas were not obvious (e) (200x, black arrow). There were abundant stromal cells in some sections (f) (200x, black arrow).