耳下腺内に発生したリンパ上皮性嚢胞の1例

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Lymphoepithelial cysts are often found in the lateral cervical region and rarely within the parotid gland.<BR>The patient, α 31-year-old female, complained of a mass in her right parotid gland. On physical examination, a tumor about 2 × 1 cm in size was palpable and the preoperative impression was a benign parotid gland tumor.<BR>Under general anesthesia, the tumor was resected by superficial parotidectomy, and the exposed facial nerve was covered with a sternomastoid muscular flap to prevent Frey syndrome, which often occurs after this kind of operation.<BR>On pathological examination, the tumor was found to be a lymphoepithelial cyst lined with stratified squamous epithelium with abundant lymphoid tissue beneath the epithelium.<BR>We suggest that the cyst may be arose from the ectopic salivary gland tissue in the lymph node within the salivary gland.
社団法人日本口腔外科学会の論文