A case of carcinoma ex pleomorphic adenoma of the palate composed of basal cell adenocarcinoma and squamous cell carcinoma

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  • ABE Ryosuke
    Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University
  • SATO Hirotaka
    Division of Anatomical and Cellular Pathology, Department of Basic Medicine, Iwate Medical University
  • KOGI Shintaro
    Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University
  • YAGI Masaatsu
    Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University
  • YAMAYA Genki
    Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University
  • MIZUKI Harumi
    Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University

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Other Title
  • 基底細胞腺癌と扁平上皮癌が認められた口蓋多形腺腫由来癌の1例
  • キテイ サイボウセンガン ト ヘンペイ ジョウヒ ガン ガ ミトメラレタ コウガイ タケイセン シュ ユライガン ノ 1レイ

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An 80-seven-year-old woman visited our department for further examination and treatment of a mass in the palate. A mass measuring 32×30 mm was detected in the region from the midline of the palate to the right alveolar part. The results of a biopsy were consistent with a diagnosis of carcinoma ex pleomorphic adenoma. Then, partial maxillectomy was conducted with the patient under general anesthesia. Histologically, the lesion was regarded as carcinoma ex pleomorphic adenoma consisting of the following three tumorous components: pleomorphic adenoma, basal cell adenocarcinoma, and squamous cell carcinoma. The possibility that pleomorphic adenoma has concomitant carcinoma should be considered, and particularly careful examination is necessary in cases that probably have a long past history.

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