Histologic types and frequencies of parotid lesions
| Histologic Types | Surgical Findings | ||
|---|---|---|---|
| Superficial Lobe | Deep Lobe | ||
| Benign tumors | |||
| Pleomorphic adenoma | 57 | 44 | 13 |
| Warthin tumor | 15 | 13 | 2 |
| Basal cell adenoma | 3 | 2 | 1 |
| Myoepithelioma | 1 | 1 | 0 |
| Lymphoepithelial cyst | 3 | 3 | 0 |
| Reactive lymphadenopathy | 1 | 1 | 0 |
| Inflammation | 1 | 1 | 0 |
| Malignant tumors | |||
| Malignant lymphoma | 1 | 1 | 0 |
| Metastatic tumor | 2 | 2 | 0 |
| Oncocytic carcinoma | 1 | 1 | 0 |
| Acinic cell carcinoma | 2 | 2 | 0 |
| Carcinoma ex pleomorphic adenoma | 1 | 1 | 0 |
| Basal cell adenocarcinoma | 1 | 1 | 0 |
| Salivary duct carcinoma | 2 | 2 | 0 |
| Total | 91 | 75 | 16 |