Figure 8: Photomicrograph showing a lining epithelium which is 6–8 cell layers thick, having basal cell palisading, surface parakeratinisation, and keratin squames within the lumen; there is artifactual separation of the lining epithelium from the connective tissue wall (short arrow). Also seen are other smaller cysts having a similar lining and containing keratin (long arrow) (×50).