A case report of lymphoepithelial cyst within the parotid gland.

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Lymphoepithelial cyst (branchial cyst) often occurs in the lateral cervical region but rarely seen within the parotid gland. In Japan, as far as we could find in the literature, there have been only 15 cases of lymphoepithelial cyst within the parotid gland. In this report, we discuss a case of lymphoepithelial cyst within the parotid gland which we experienced clinically.<BR>The subject is a 57-year-old male who appeared at our hospital with the chief complaint of swelling of the left parotid gland. A 32 × 43 mm tumor was palpable in the left parotid gland region. Resection of the tumor was performed under general anesthesia, and it turned out to be a single vesicle cyst having lymphoid tissues with some germinal centers in the wall. It was diagnosed histopathologically as lymphoepithelial cyst. At present, a year and 7 months postoperatively, the patient is remarkably well.
社団法人日本口腔外科学会の論文