Volume 18, Number 1, March 2006

Schwannoma of the Oral Cavity

Tomomi Yamashita, Makoto Toida, Daijiro Hatakeyama, Kazuhiro Yonemoto, Yukihiro Kusunoki, Toshiyuki Shibata
Department of Oral and Maxillofacial Sciences, Graduate School of Medicine, Gifu University, Gifu, Japan

Intraoral occurrence of schwannoma is relatively rare. This report is of 4 patients with schwannoma of the oral cavity. The presenting complaint for all patients was intraoral submucosal swelling. The tumour arose in the tongue in 2 patients, the retromolar region in 1, and the buccal mucosa in 1. One of the tumours originating in the tongue was located in an unusual site, beneath the hyoglossal muscle layer. All 4 patients underwent surgery for tumour excision and the tumours were then diagnosed as schwannomas. Histologically, Antoni A tissue was observed in all tumours and was the predominant feature in 3 tumours; Antoni B tissue associated with cystic degeneration and necrosis was also identified in 1 tumour.

Key words:
Magnetic resonance imaging, Nerve sheath neoplasms

Asian J Oral Maxillofac Surg. 2006;18:75-78.

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