HPV Infection, but Not EBV or HHV-8 Infection, Is Associated with Salivary Gland Tumours

Table 2

Tumour characteristics of malignant and benign tumours ().

	Type of tumour	Number of cases	Frequency in %
Malignant	Mucoepidermoid carcinoma	17	18.3
	Adenoid cystic carcinoma	16	17.2
	Adenocarcinoma NOS	10	10.8
	Salivary duct carcinoma	9	9.7
	Acinus cell carcinoma	7	7.5
	Adenoid basal-cell carcinoma	5	5.4
	Squamous cell carcinoma	5	5.4
	Nonkeratinized squamous cell carcinoma	4	4.3
	Keratinized squamous cell carcinoma	4	4.3
	Oncocytic carcinoma	2	2.2
	Lymphoepithelial carcinoma	2	2.2
	Micropapillary carcinoma	2	2.2
	Myoepithelial carcinoma	5	5.4
	Pseudo sarcomatoid carcinoma	1	1.1
	Polymorphic low-grade carcinoma	1	1.1
	Undifferentiated carcinoma	1	1.1
	Cystadenocarcinoma	1	1.1
	Malignant melanoma	1	1.1
Benign	Cystadenolymphoma (Warthin’s tumour)	46	43
	Pleomorphic adenoma	33	30.8
	Basal-cell adenoma	15	14.0
	Oncocytoma	7	6.5
	Myoepithelioma	3	2.9
	Cystadenoma	2	1.9
	Adenolyphoma	1	0.9

NOS, not otherwise specified.