Table 2 Characteristics of the population according to pretreatment facial nerve function
Normal facial function | Pretreatment facial palsy | SMD | |
|---|---|---|---|
n | 200 | 87 | |
Facial nerve resection (%) | 89 (44.5) | 77 (88.5) | 1.054 |
Age at diagnosis (mean (SD)) | 60.21 (17.68) | 64.34 (13.11) | 0.266 |
Male sex (%) | 112 (56.0) | 60 (69.0) | 0.270 |
Tumoral size (mm) | 29.95 (17.10) | 31.97 (15.31) | 0.124 |
Log(Tumoral size) | 3.24 (0.64) | 3.36 (0.48) | 0.219 |
Extraparenchymal extension (%) | 78 (40.0) | 33 (62.3) | 0.457 |
Skin or bone invasion (%) | 17 ( 8.7) | 11 (20.8) | 0.345 |
cN+ (%) | 58 (29.0) | 37 (42.5) | 0.285 |
M1 (%) | 9 ( 4.5) | 11 (12.6) | 0.294 |
Grade (%) | 0.725 | ||
I | 60 (31.4) | 5 ( 6.2) | |
II | 28 (14.7) | 9 (11.2) | |
III | 103 (53.9) | 66 (82.5) | |
Deep lobe tumor (%) | 53 (26.9) | 25 (30.5) | 0.079 |
Adenoid cystic carcinoma (%) | 24 (12.0) | 11 (12.6) | 0.020 |
Total parotidectomy (%) | 177 (88.5) | 80 (92.0) | 0.117 |
Neck dissection (%) | 163 (83.6) | 77 (92.8) | 0.287 |
Radiotherapy (%) | 150 (76.9) | 76 (87.4) | 0.275 |
Chemotherapy (%) | 31 (16.1) | 30 (35.7) | 0.460 |
Surgical margin (%) | 0.448 | ||
Negative | 50 (26.7) | 14 (17.3) | |
Positive | 92 (49.2) | 57 (70.4) | |
Close | 45 (24.1) | 10 (12.3) | |
Vander Poorten score (mean (SD)) | 5.28 (1.03) | 6.66 (0.79) | 1.504 |
Prognostic index (%) | 1.342 | ||
1 | 15 (10.3) | 0 ( 0.0) | |
2 | 39 (26.9) | 0 ( 0.0) | |
3 | 40 (27.6) | 6 (14.6) | |
4 | 51 (35.2) | 35 (85.4) |