リンパ上皮性嚢胞に類似した組織像を呈した耳下腺良性リンパ上皮性疾患の1例

DOI 被引用文献1件
  • 坂下 英明
    Department of Dentistry and Oral Surgery, Ishikawa Prefectural Central Hospital
  • 宮田 勝
    Department of Dentistry and Oral Surgery, Ishikawa Prefectural Central Hospital
  • 宮本 日出
    Department of Dentistry and Oral Surgery, Ishikawa Prefectural Central Hospital
  • 車谷 宏
    Department of Pathology, Ishikawa Prefectural Central Hospital
  • 林 守源
    Department of Pathology, Asahigaoka Hospital

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タイトル別名
  • A Case of Benign Lymphoepithelial Lesion Resembling to Lymphoepithelial Cyst in Parotid Gland

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Benign lymphoepithelial lesion is a salivary gland enlargement characterized histologically by atrophy of glandular parenchyma and lymphocytic infiltration, with island of epithelial and myoepithelial cells replacing the intralobular ducts. Macrosropically, cyst formation occasionally occured, but the cysts remained small.<BR>A case of this disease resembling lymphoepithelial cyst in parotid gland was reported. A 60-year-old Japanese female complained of a painless mass in her right parotid region. After investigations, the mass was diagnosed as a benign parotid gland tumor with cyst formation.<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 of the occurs after this kind of operation.<BR>On pathological examination, the lesion was found to be this disease. Cystic area lined by stratified squamous epithelium with abundant lymphoid tissue beneath the epithelium, resembled lymphoepithelial cyst in parotid gland. In the solid area, we found diffuse lymphoid infiltration and epimyoepithelial island formation. The cyst we diagnosed may have arose from the benign lymphoepithelial lesion.

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