Verruciform xanthoma of the oral mucosa. Report of five cases and review of the literature.

Verruciform xanthoma is an uncommon lesion confined mainly to the oral mucosa. Only two extraoral cases have been reported, and these involved the genitalia. Clinically, verruciform xanthoma is a raised lesion with a papillary or granular surface, usually located on the gingiva or alveolar mucosa. Microscopically, it is characterized by epithelial cell proliferation and by the accumulation of xanthoma cells in the upper lamina propria. Five new cases are reported and analyzed together with an additional 29 cases found in a review of the literature.