Figure 2

Histopathological characteristics of the submandibular gland cystadenocarcinoma. (A) Most of the cysts were lined by a single or multiple layers of epithelial cells that formed papillary, mesh, or cribriform architectures (×40). (B) Some cysts had no epithelial lining, with scattered tumor cells or cell clusters floating in the mucus lakes (×40). (C) The tumor cells were cuboidal or low columnar (×400). (D) Alcian Blue staining showed both cysts and tumor cells were filled with mucus-like materials (×100).