Epidermoid or pilar cysts are very common and are usually of no clinical significance.
Epidermoid cysts (also known as epithelial, epidermal or sebaceous cysts) are intradermal or subcutaneous tumours. Epidermoid cysts may occur anywhere on the body but occur most often on the face, scalp, neck, back and scrotum. Although they are most commonly known as sebaceous cysts, they actually do not involve the sebaceous gland.1
This is a companion discussion topic for the original article at https://patient.info/doctor/dermatology/epidermoid-and-pilar-cysts-sebaceous-cysts-pro