徳島大学 教育・研究者情報データベース(EDB)

1. 栗尾 奈愛([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔外科学]/[徳島大学.病院.診療科.歯科口腔外科.口腔外科])

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2. 鎌田 久美子([徳島大学.大学院医歯薬学研究部.歯学域.先端歯学教育研究プロジェクト]/[徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔外科学]/[徳島大学.病院.診療科.歯科口腔外科.口腔外科])

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3. 上杉 篤史([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔外科学])

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4. 常松 貴明([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.基礎歯学系.口腔病理学])

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5. 工藤 保誠([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.基礎歯学系.口腔生命科学])

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(英) A Case of Basal Cell Adenoma of the Buccal Mucosa

(日) 頬粘膜に発生した基底細胞腺腫の1例

(英) Basal cell adenoma (BCA) is a rare type of benign salivary gland tumor. It frequently occurs in the parotid glands but rarely in the minor salivary grands. We report a rare case of BCA of the buccal mucosa. A 81-year-old man presented to our department with a mass of his left side of buccal mucosa. Intraoral examination revealed an elastic-hard, mobile, well-circumscribed submucosal mass covered with normal mucosa, measuring about 15 mm in diameter. Ultrasonography showed well-defined hypoechoic area and slight blood flow. Clinical diagnosis was a benign buccal tumor. The tumor excision was performed under intravenous sedation. Since the tumor had distinct capsule and no adhesion with surrounding tissue, it was easily resected. Histopathological examination revealed that the tumor was encapsulated by thin fibrous connective tissue. Some tumor nests presented with biphasic tubular structure composed of inner luminal cells and outer basaloid and myoepithelial cells. Immunohistochemical examination revealed that the basaloid and the myoepithelial cells were positive for p63 and the luminal cells and the stromal cells were positive for S-100. Ki-67 labeling index was less than 1%. Histopathological diagnosis was BCA. The postoperative course was uneventful. Tumor recurrence has not been observed over 3 years.

1. (日) 基底細胞腺腫
2. (日) 頬粘膜
3. (日) S-100 蛋白
4. (日) 間質細胞