Table 2.
Distribution of 231 malignant tumors of the parotid gland treated at our institutions, according to the histological type.
| Histological type | Number of cases | Percentage |
|---|---|---|
| Mucoepidermoid carcinoma | 67 | 29% |
| Undifferentiated carcinoma | 33 | 13,5% |
| Cystic adenoid carcinoma | 27 | 11% |
| Adenonocarcinoma NOS | 22 | 9% |
| Acinar cell carcinoma | 20 | 8% |
| Carcinoma ex pleomorphic adenoma | 19 | 8% |
| Squamous cell carcinoma | 15 | 6% |
| Basal cell adenocarcinoma | 5 | 3% |
| Salivary duct carcinoma | 4 | 2% |
| Lymphoepithelial carcinoma | 2 | 1% |
| Epithelial-Myoepithelial carcinoma | 1 | 0,5% |
| Oncocytic carcinoma | 1 | 0,5% |
| Myoepithelial carcinoma | 1 | 0,5% |
| Lymphoma | 14 | 6% |
| Non-lymphoid mesenchymal tumor | 4 | 2% |
| TOTAL | 231 | 100% |