Sclerosing odontogenic carcinoma of maxilla: A case report

Figure 2 Histological findings of the present case. A and B: Histological view focusing on small cords of epithelial cells of odontogenic origin immersed in a diffused sclerotic and collagenous stroma [hematoxylin and eosin (H&E), original magnification: × 20]; C: Evidence of vascular invasion (H&E, original magnification: × 20); D: Focal positivity in tumor cells to immunohistochemical staining for cytokeratin 7 (CK7) (original magnification: × 20); E: Immunohistochemistry for expression of CK19 demonstrating diffuse, uniform positivity in the neoplastic cells (original magnification: × 20); F: Immunohistochemistry demonstrating that the tumor cells expressed p40 (original magnification: × 20); G: Strong, diffuse positivity was seen for the expression of p63 (original magnification: × 20); H: The tumor cells were stained negative for vimentin (original magnification: × 20); I: Low proliferative activity (Ki-67) was seen (approximately 5%-10%) (original magnification: × 20). CK: Cytokeratin; H&E: Hematoxylin and eosin.