Table 4. Adnexal tumors (263, 11.8%).
| Type of tumor | Cases | Adnexal tumors (%) | All tumors (%) | Mean age (range), y | Sex ratio (F/M) | Location (U/L) |
| Sebaceous gland tumors (123, 46.8%) | ||||||
| Sebaceous carcinoma | 101 | 38.4 | 4.5 | 60 (20-98) | 1.9/1 | 2.1/1 |
| Sebaceous adenoma | 16 | 6.1 | 0.7 | 62 (7-83) | 1.7/1 | 1/1 |
| Sebaceous hyperplasia | 6 | 2.3 | 0.3 | 52 (28-70) | 0.5/1 | 2/1 |
| Hair follicle tumors (127, 48.3%) | ||||||
| Pilomatrixoma | 103 | 39.2 | 4.6 | 21 (1-84) | 1.3/1 | 0.1/1 |
| Trichoepithelioma | 20 | 7.6 | 0.9 | 49 (10-74) | 0.7/1 | 1.5/1 |
| Trichilemmoma | 1 | 0.4 | 0.04 | 68 (68-68) | 1/0 | 1/0 |
| Trichofolliculoma | 3 | 1.1 | 0.1 | 61 (49-70) | 2/1 | 3/0 |
| Tumors of eccrine and apocrine gland (13, 4.9%) | ||||||
| Hidrocystoma | 9 | 3.4 | 0.4 | 51 (9-72) | 2/1 | 0.8/1 |
| Syringoma | 4 | 1.5 | 0.18 | 43 (30-58) | 4/0 | 1/1 |
F/M: Female/male; U/L: Upper/lower eyelid.