Oral traumatic granuloma: report of a case and review of literature.

Traumatic granuloma is an uncommon condition considered to be a benign, reactive lesion that usually affects the tongue. The exact pathogenesis implicated in the development of this lesion is not clear. However, trauma has been found to be a contributing factor in a majority of the cases. Clinically, it often presents as an ulceration or an indurated submucosal mass. Microscopically, it is characterized by a diffuse polymorphic cell infiltrate composed predominantly of eosinophils extending deep into the submucosa causing degeneration of the underlying muscle. Recognition of the lesion is important because it often mimics oral squamous cell carcinoma. But traumatic granuloma is self-limiting and tends to resolve spontaneously. This paper describes a case of traumatic granuloma on the dorsal surface of tongue in a 62-year-old woman. The clinical aspects, pathogenesis and histopathology of this uncommon lesion are discussed with an emphasis on its benign, self-limiting nature.