Fig. 6.
Findings of pathological examination: pathological examination of the tumor area showed carcinoma cells arranged in nests and trabecular patterns, with scattered keratinization within the nests. The present case showed a small number of glandular ducts that were positive for hematoxylin–eosin (a) and alcian blue staining (b), and the majority of tumor cells were p40 (c) and cytokeratin5/6 (CK5/6) (d) positive. The pathologic diagnosis was adenosquamous carcinoma