Research Article
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 |
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NOS, not otherwise specified.
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