基底細胞型の病理組織像を呈した骨外型/周辺型エナメル上皮腫の1例

• Published in: 日本口腔外科学会雑誌 Vol. 69; no. 12; pp. 548 - 554
• Main Authors: 福田, 幸太, 小熊, 哲史, 荻野, 明彦, 武井, 新吾, 草深, 公秀, 足立, 守安
• Format: Journal Article
• Language: Japanese
• Published: 公益社団法人 日本口腔外科学会 20.12.2023
• Subjects: 上顎結節; 基底細胞型; 骨外型 /周辺型エナメル上皮腫
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.69.548

We report a case of extraosseous/peripheral ameloblastoma with basal cell type. The patient was an 81-year-old man. At his initial visit, a large tumor measuring 15×10 mm in size was observed in the gingiva of his right maxillary node. CT images revealed no bone resorption around the tumor. A biopsy was carried out and, since it was found to be an extraosseous/peripheral ameloblastoma of the basal cell type according to a histopathological diagnosis, tumor resection was carried out under general anesthesia. The tumor was continuous with the gingival epithelium and the follicular proliferation of basal cell-like cells along with high cylindrical epithelium at the margins of the follicular nests were observed. Seven years and four months have elapsed since surgery, and no recurrence has been observed.