Schwannoma of the Oral Cavity

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