A case of lymphoepithelial cyst found in the floor of the mouth.

Abstract

Lymphoepithelial cysts are usually found on the lateral region of the neck. They can be found only rarely in various regions of the oral cavity. A case of lymphoepithelial cyst, located in the floor of the mouth of a 62-year-old man, is reported here. The patient had been suffering from carcinoma of the mandibular gingiva. Surgical treatment was performed. The lymphoepithelial cyst was unexpectedly found in a histopathological examination of the operated material. This cyst was lined by a stratified squamous epithelium. The lymphoid tissue contained germinal centers. There was no evidence of recurrence either of carcinoma or lymphoepithelial cyst after 4 years.