Table 1 Demographics and clinical data
|  | Basal cell adenoma (n = 81) | Basal cell adenocarcinoma (n = 7) | p-value |
|---|---|---|---|
Mean age (youngest-eldest) | 55.1 (23–85) | 68.6 (52–87) | 0.056 |
Gender | 34 male (42%) 47 female (58%) | 7 female (100%) | 0.076 |
Location | 81 parotid (100%) 42 left (52%) 39 right (48%) | 7 parotid (100%) 3 left (43%) 4 right (57%) | 0.193 |
Preoperative symptoms | 61 painless swelling (76.3%) 20 incidental finding (24.7%) | 7 painless swelling (100%) | – |
Type of parotidectomy | 44 partial (54%) 35 superficial (43%) 2 total (2%) | 4 partial (57%) 2 superficial (29%) 1 total (14%) | – |
Radiologic size of radiologic largest dimension length (smallest-largest) (SD) | 2.2 cm (0.5–17) (1.9) | 2.4 cm (1.7–3.5) (0.6) | 0.16 |
Pathologic size of tumor (smallest-largest) (SD) | 2.1 cm (0.5–12.5) (1.4) | 2.9 cm (2.3–3.6) (0.5) | 0.011 |
Median time from detection to operation (shortest-longest) | 35.3 months (2-241) Unknown 12 patients | 28.8 months (2-121) Unknown 1 patient | 0.219 |
Median follow up (shortest-longest) | 39.1 months (1-221)* | 36 months (4-121)** | 0.678 |
Postoperative complications | 3 hematoma (3.7%) 2 sialocele (2.5%) 1 partial facial nerve palsy (1.2%) | 1 facial nerve palsy (14.3%) | 0.081 |
Adjuvant treatment | None | 1 chemotherapy (14.3%) | – |
Relapse | None*** | None**** | – |