舌下面にみられたリンパ上皮性嚢胞の2例

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Lymphoepithelial cyst generally occurs in the lateral cervical areas. It is characterized histopathologically as the lymphoid tissue below the lining of the stratified squamous epithelium of the cyst, but the same cyst sometimes occurs in the oral cavity. This report includes two cases of the cyst in the ventral surface of the tongue.<BR>Case 1. A 37-year-old man visited a dental office complaining of dental caries, and was found to have a small tumor on the left side of the ventral surface of the tongue. It appeared as a round mass, approximately 4mm in diameter, and distinguished from the surrounding oral mucosa. Under local anesthesia, the lesion was totally enucleated. Histopathological findings revealed a cyst with parakeratinizing stratified squamous epithelium and lymph follicles.<BR>Case 2. The same cyst was found on the right side of the ventral surface of the tongue in a 21-year-old woman. The tumor appeared as a round mass, approximately 4mm in diameter, white in color, and distinguished from the surrounding oral mucosa. Under local anesthesia, total enucleation was performed. Histopathologically, the inner side of the cyst was covered with a parakeratinizing stratified squamos epithelium, and the lymphoid tissue was found below the lining. In addition, we confirmed the continuance between the oral mucosa and the lining of the cyst.
社団法人日本口腔外科学会の論文