15. Oral lymphoepithelial cyst. A. low-power view showing a keratin -filled cyst below
the mucosal surface. lymphoid tissue is present in the cyst wall. B. High-power view showing
lymphoid tissue adjacent to the cystic lining.
30. Epidermoid cyst. A. l ow-power view showing a keratin-filled cystic cavity. B,
Highpowered view showing stratified squamous epithelial lining with
orthokeratin production.
31. Globulomaxillary cyst. " Inverted pear-shaped
radiolucency (arrow) between the maxillary right cuspid and
the lateral incisor. Biopsy revealed a periapical cyst.
33. Nasolabia l cyst . A. Enlargement of the left upper lip with
elevation of the ala of the
nose. B. Intraoral swelling fills the maxillary labial fold.
36. Median palatal cyst. Well-circumscribed radiolucency
apical to the maxillary incisors in th e midline. At surgery
th e lesion was unrelated to the incisive canal.
45. Apert syndrome. Radiograph showing "tower
skull," midface hypoplasia, and digitalmarkings. Similardigital
impressions are apparent in people with Crouzon syndrome.