Fig. 2
Photomicrographs of epimyoepithelial carcinoma from the lower lip in hematoxylin and eosin stain, normal architecture of mucosa epithelium and fibromuscular adipose tissue containing a minor salivary gland with marked ductal hyperplasia and inflammatory cell infiltration (arrows) (a), severely keratinized and exhibited comedo-type necrosis and luminal sequestration of the keratinized epithelium, mimicking glandular duct structures (arrows) and relatively well-localized and typically surrounded by abundant lymphoid tissue (Ly) (b)