What is Leukoedema?
Most commonly seen in African Americans (as well as smokers), leukoedema is a white lesion that appears opalescent, filmy, and does not rub off. This lesion will be seen bilaterally on the buccal mucosa and is very common. Leukoedema is a variation of normal and does not pose any harmful symptoms. In order to diagnose the lesion, the white appearance of the mucosa will disappear when the tissue is stretched.

What is Epulis fissuratum?
Epulis fissuratum is a tumor-like hyperplasia of fibrous connective tissue. It develops in association with an ill-fitting denture or partial that causes chronic irritation. Epulis fissuratum appears as rolls of tissue along a denture flange, and can be painful. The lesion will slowly grow, and can either be firm or compressible. In order for the lesion to be healed, the denture may have to be relined or remade.

(n.d.) Reactive Epithelial Cysts. Dr. Pourian. A.T. Still Missouri School of Dentistry and Oral Health
(n.d.) White Lesions. Dr. Pourian. A.T. Still Missouri School of Dentistry and Oral Health