Histopathology of the surgical specimen using hematoxylin-eosin (H-E) staining. (a) The tumor was surrounded by a thin capsule and did not involve any normal salivary gland tissue (H-E ×40). (b) Proliferation of monomorphic epithelial cells with a trabecular pattern and variably sized nests of cuboidal cells (H-E ×100). (c) Proliferation of monomorphic epithelial cells of a tubular type (H-E ×100).
