Focal oral warty dyskeratoma.

A 49-year-old white man developed focal oral warty dyskeratoma, which is a solitary, elevated nodule with a keratotic umbilicated center. The term "focal oral warty dyskeratoma" was suggested to distinguish these lesions from the histologically similar oral lesions found in Darier's disease. This paper reviews previously published reports of the lesion and presents an additional case. The average age of patients was 52.2 years, and a slight male predilection was noted. In almost all cases, the lesion was found in tissue overlying bone, with the maxillary alveolar ridge and palate being the most common locations. When the side of involvement was given, all lesions were noted to be on the left side. No evidence of a viral presence was seen with light or electron microscopic study, but the possibility of chronic irritation, such as tobacco usage, exists as an etiologic agent.