Table 1. Histopathological classification and clinic features of the benign tumors.

Type of benign tumor	Cases	All benign tumor (%)	Subtype tumor (%)	All tumor (%)	Mean age (range), y	Sex (F/M)	Location (U/L)
Tumors of the epidermis (900, 46.4%)
Benign tumors and cysts	874	45.1	80.9	39.1	51 (1-86)	1.1/1	1.1/1
Premalignant tumors	26	1.3	2.4	1.1	59 (26-75)	1.6/1	0.9/1
Adnexal tumors (162, 8.4%)
Hair follicle tumors	127	6.6	48.3	5.7	49.8 (1-84)	1.2/1	0.2/1
Sebaceous gland tumors	22	1.1	8.4	1.0	57 (7-83)	1.2/1	1.2/1
Tumors of eccrine and apocrine gland origin	13	0.7	4.9	0.6	47 (9-72)	3.3/1	0.9/1
Miscellaneous tumors (874, 45.2%)
Melanocytic tumors	671	34.7	75.8	30.1	33 (12-89)	4.9/1	1.3/1
Vascular tumors	112	5.8	12.7	5.0	43.7 (3-79)	1.3/1	1.8/1
Other	77	4	8.8	3.5	51.8 (28-74)	2.3/1	5.4/1
Tumors of neural crest origin	14	0.7	1.5	0.6	42.8 (7-71)	1.3/1	1.3/1

F/M: Female/male; U/L: Upper/lower eyelid.