Table 1.
Patient and treatment characteristics
| Variable | Value |
|---|---|
| Age (yr) | 57 (23–82) |
| Sex (male:female) | 41 (71.9):16 (27.6) |
| Histological type | |
| Low grade (MEC:AdCC:CXPA:ACC:EMC) | 7 (12.3):6 (10.5):5 (8.8):4 (7.0):3 (5.3) |
| Intermediate grade (MEC) | 2 (3.5) |
| High grade (ADC:SDC:SCC:MEC:LEC:OCC:LCC) | 8 (14.0):7 (12.3):6 (10.5):5 (8.8):2 (3.5):1 (1.8):1 (1.8) |
| pT-stage (T1:T2:T3:T4) | 12 (21.1):21 (36.8):11 (19.3):13 (22.8) |
| pN-stage (N0:N1:N2b) | 39 (68.4):6 (10.5):12 (21.1) |
| pStage (I:II:III:IVA) | 10 (17.5):16 (28.1):11 (19.3):20 (35.1) |
| Tumor size (cm) | 3 (1–6.3) |
| Tumor grade (well:moderately:poorly) | 30 (52.6):9 (15.8):18 (31.6) |
| Surgical margin | |
| Negative | 45 (78.9) |
| Positive+close (<5 mm) | 12 (21.1) |
| Perineural invasion (no:yes) | 47 (82.5):10 (17.5) |
| Lymphovascular invasion (no:yes) | 48 (84.2):9 (15.8) |
| Surgery type | |
| Superficial parotidectomy | 19 (33.3) |
| Total parotidectomy | 10 (17.5) |
| Total parotidectomy and neck dissection | 28 (49.2) |
| Therapeutic neck dissection | 17 |
| Elective neck dissection | 11 |
| Radiation field | |
| Parotid bed | 41 (71.9) |
| Parotid bed+ipsilateral cervical neck node | 16 (28.1) |
| Radiation dose (Gy) | 50.4 (41.4–66.6) |
| Follow-up period (mon) | 66 (9–124) |
Values are presented as median (range) or number (%).
MEC, mucoepidermoid carcinoma; AdCC, adenoid cystic carcinoma; CXPA, carcinoma ex pleomorphic adenoma; ACC, acinic cell carcinoma; EMC, epithelial-myoepithelial carcinoma; ADC, adenocarcinoma, not otherwise specified; SDC, salivary duct carcinoma; SCC, squamous cell carcinoma; LEC, lymphoepithelial carcinoma; OCC, oncocytic carcinoma; LCC, large cell undifferentiated carcinoma; p, pathologic.