Table 2.

The role of histological staining and markers used in our study

No.	Staining / Immunomarker	Reactivity
1.	Hematoxylin–Eosin	An overview of the tissue’s components
2.	Congo Red	Highlights the amyloid structure
3.	CK AE1–AE3	Differentiate epithelial tumors from non-epithelial tumors
4.	Ki67	Marks cell proliferation
5.	CK19	Identifies dysplasias in the oral epithelium
6.	S100	Marks the cells originating in the neural crest
7.	α-SMA	Marks smooth muscle actin
8.	Vimentin	A suggestive marker for a mesenchymal origin of a tumor lesion

CK: Cytokeratin; α-SMA: Alpha-smooth muscle actin