Fig. 3
The well-differentiated epithelial tumor cells with highly keratinization in the tumor cluster, proliferation through budding and branching (arrows), similar to glandular ductal growth in the periphery (a), epimyoepithelial islets found in Mikulicz Disease in some keratinized tumor epithelium (arrow) (b), pseudo-ductal structures (arrows) with active lymphocytic reactions in some tumor epithelium (c), and keratinized tumor epithelium to be floating in the lymphoid stroma (Ly) with no features of infiltrative growth into adjacent fibromuscular adipose tissue in cytokeratin immunostaining (d)