A case of spindle cell carcinoma in the floor of the mouth

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  • NAKAMURA Daisuke
    Department of Oral and Maxillofacial Surgery, Sakura General Hospital
  • WAKITA Takeshi
    Department of Oral and Maxillofacial Surgery, Sakura General Hospital
  • IMAI Takao
    Department of Oral and Maxillofacial Surgery, Sakura General Hospital
  • ABE Atsushi
    Department of Oral and Maxillofacial Surgery, Aichi-Gakuin University, School of Dentistry
  • SUGITA Yoshihiko
    愛知学院大学歯学部口腔病理学講座
  • MAEDA Hatsuhiko
    愛知学院大学歯学部口腔病理学講座

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Other Title
  • 口底部に生じた紡錘細胞癌の1例
  • クチ テイブ ニ ショウジタ ボウスイ サイボウガン ノ 1レイ

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Abstract

Spindle cell carcinoma is characterized by multiplication of polygonal cells, which mainly comprise tumor cells, and is classified as a type of squamous cell carcinoma. The frequency of spindle cell carcinoma in the oral area is low, particularly in the floor of the mouth. Since spindle cell carcinoma shows a sarcomatoid structure in deep parts; diagnosis requires both clinical and immuno-histological confirmation. We report the case of a patient presenting spindle cell carcinoma in the floor of the mouth. A 57-year-old man visited our hospital with a chief complaint of a sense of discomfort in the floor of mouth. A 10 mm×10 mm tumor mass with an irregular, extroverted border was recognized on the right side of the floor of the mouth. No movement disorder or dysesthesia of the tongue was seen and saliva secretion was good. In addition, no enlarged or tender lymph nodes were identified. Diagnostic imaging showed a sublingual tumor mass measuring 10 mm×6 mm and no findings suggestive of metastasis to distant tissue. We excised part of the floor of the mouth under general anesthesia after a diagnosis of spindle cell carcinoma was obtained from the results of histopathological diagnosis following biopsy. As of three and a half years postoperatively, no recurrence has been seen and the patient is considered to have a good prognosis.

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