A<unk>  (a form of trichilemmal cyst) is a closed sac or cyst below the surface of the skin that has a lining that resembles the uppermost part (infundibulum) of a hair follicle and fills with a fatty white, semi-solid material called sebum. Sebum is produced by<unk>  glands of the epidermis.
Sebaceous cyst
Epidermoid cyst
Ganglion cyst
Dermoid cyst
Acrospiroma
Nabothian cyst
Sebaceoma
Colloid cyst