Figure 2: Mixture of squamous epithelium (white arrow) and glandular epithelium (black arrow). The squamous epithelium showed varying degrees of atypical hyperplasia. The glandular epithelium consisted of mucinous columnar cells and pseudostratified ciliated or non-ciliated cuboidal cells. H & E staining: (a) scale bar 400 μm; (b) scale bar 200 μm