Intraoral superficial angiomyxoma.

Superficial angiomyxoma is an unusual benign myxoid tumor of the trunk, head and neck, extremities, and genitalia. We report the third case of intraoral superficial angiomyxoma, which occurred within the buccal mucosa of a 37-year-old woman. The symptomless slow-growing mass was present for 2 years. The lobulated, paucicellular myxoid tumor showed prominent vascularity, stromal inflammation, including neutrophils, and immunopositivity for CD34, vimentin, and muscle-specific actin. Cure is effected by localized excision, with follow-up, owing to the high recurrence rate of the cutaneous tumors, which has not been substantiated for the few reported intraoral cases. Superficial angiomyxoma does indeed occur intraorally and should be included in the differential diagnosis of myxoid intraoral soft tissue neoplasms.