Lateral Periodontal Cyst Treated with Enucleation and Guided Bone Regeneration: A Report of a Case and a Review of Pertinent Literature

Figure 4

Histopathological examination of (a) the excised cystic lesion showing and (b) cystic lesion composed of reduced enamel epithelium-like lining comprising single or double layer(s) of flattened squamous or cuboidal cells and subtly thickened areas with more closely packed cells (arrow). The cyst wall is uninflamed throughout but demonstrates varying degrees of collagenization and cellularity. Cells with a clear cytoplasm are scattered throughout the lining (a). (c) A fragmented part of the lining showing a thickened cellular plaque with evidence of whorled (swirling) arrangement (blue arrow). Cells with a clear cytoplasm are also seen scattered in this plaque. (d) Another fragmented thickened epithelial plaque with areas showing ductal orientation (red arrow). Scale bars: 100 μm (a, c) and 200 μm (b, d).

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(b)

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