A keratocyst is a type of cutaneous cyst. They appear similar to epidermoid cysts; however, are not limited to a specified location on the body. Keratocyst are most often reported in persons with nevoid basal cell carcinoma syndrome.
Pathology
Keratocysts have a stratified squamous epithelial wall without sebaceous lobules.
References
Keratocyst Wikipedia(Text) CC BY-SA