Patient

(number)

Histological diagnosis

Key feature (arise from)

Female

(number)

Male

(number)

Age

Filaggrin

IHC

n = 5

Healthy people

normal skin

2

3

15 - 45

SC (+)

n = 5

Trichilemmalcyst

hair follicle

2

3

30 - 45

SC (+); cyst (+)

n = 5

Sebaceous cyst

sebaceous gland

1

4

15 - 35

SC (+)

n = 5

Epidermal cyst

epidermoid cyst

2

3

25 - 37

SC (+); cyst (+)

n = 5

Steatocystoma

pilosebaceous duct junction

1

4

20 - 34

SC (+); cyst (+)

n = 5

Psoriasis

chronic inflammatory

2

3

25 - 36

SC (−)