Schwannoma of the tongue : Report of a case

Yasuo YOKOBAYASHI, Yasuhiro HIDESHIMA, Michiyuki MAEDA, Sayuri KAWAKITA
Department of Dentistry, Oral and Maxillofacial Surgery, Toyama Prefectural Central Hospital (Chief: Yasuo YOKOBAYASHI

Abstract :
　　Schwannoma is a tumor originating in Schwann's cells of myelinated nerves. The occurrence of the tumor in the oral cavity is relatively rare. We experienced a case of schwannoma of the tongue. The patient was a 16 year-old man who visited our hospital for treatment of dental caries on November 2, 1991. He had been aware of the presence of the lesion for several years without treatment. Intraoral examination revealed a well-demarcated mass of 25mm in diameter on the right side of the tongue. On palpation, it was elastic, non-tender and movable. The clinical diagnosis was a tumor of the tongue. It was removed with the patient under general anesthesia on December 17, 1991. Four years and 7 months later, there was no sign of recurrence of the lesion.
　　Microscopically, the tumor consisted of a solid mass of tissue with palisading of nuclei of tumor cells. The pathological diagnosis was Schwannoma (Antoni type A).

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