Tag Archives: Epidermoid Cyst

Epidermoid Cyst Epidermoid Cyst An epidermoid cyst, also known as epidermal cyst, is a sac made of skin tissue. The sac contains a substance called keratin. Keratin is a protein that is normally secreted through the hair follicles. When keratin becomes trapped in the top layer of skin (epidermis), it can form an epidermoid cyst. […]