Multiple leiomyomatous hamartoma in the oral cavity.

Leiomyomatous hamartoma (LH) is congenital lesion rarely seen in oral cavity. In English literature, all reported cases appeared as solitary lesion in alveolar ridge or the tongue, and there have never been a report showing a case of multiple occurrence of this lesion. A quite rare case of multiple LH occurred in a 2-year-old Japanese boy is presented. A polypoid lesion was presented at incisive papilla and two isolated lesions in the tongue dorsum, one appeared as a polypoid mass in the posterior dorsum and other as a small spindle-shaped agger in the anterior dorsum. All of them were histologically diagnosed as LH.