A case of cystadenocarcinoma arising in the retromolar area

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  • OOI Kazuhiro
    Department of Oral and Maxillofacial Surgery, Tonami General Hospital
  • YURA Shinya
    Department of Oral and Maxillofacial Surgery, Tonami General Hospital
  • OHGA Noritaka
    Department of Oral and Maxillofacial Surgery, Tonami General Hospital
  • IZUMIYAMA Yuri
    Department of Oral and Maxillofacial Surgery, Tonami General Hospital
  • TERAHATA Shintaro
    Department of Pathology, Tonami General Hospital

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  • 下顎臼後部に発生した嚢胞腺癌の１例
  • カガク キュウコウブ ニ ハッセイシタ ノウホウセン ガン ノ 1レイ

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Abstract

We report a case of cystadenocarcinoma arising in the retromolar area. A 68-year-old male was referred with a painless, ulcerative, well defined, proj ecting, elastic-firm, and moderately mobile mass of the right retromolar area. Incisional biopsy was performed, and the pathological diagnosis of the specimen was sialadenoma papilliferum. Excision of the tumor was performed under general anesthesia. The histopathological diagnosis was cystadenocarcinoma, showing a cystic tumor that featured papillary proliferation of neoplastic cells varying from cuboidal to columnar. Postoperative external irradiation and chemotherapy were performed, because infiltrative growth and lymph vessel invasion were found in the circumference. There was no recurrence during 20 months of follow-up.

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