A case of basal cell adenoma in the parotid gland

• SHIDA Hiroko

  Second Department of Oral and Maxillofacial Surgery, Meikai University School of Dentistry

• TANAKA Akio

  Second Department of Oral and Maxillofacial Surgery, Meikai University School of Dentistry

• FUKUDA Masakatsu

  Second Department of Oral and Maxillofacial Surgery, Meikai University School of Dentistry

• SHIGEMATSU Hisao

  Second Department of Oral and Maxillofacial Surgery, Meikai University School of Dentistry

• KUSAMA Kaoru

  Department of Oral Pathology, Meikai University School of Dentistry

• SAKASHITA Hideaki

  Second Department of Oral and Maxillofacial Surgery, Meikai University School of Dentistry

Bibliographic Information

Other Title

• 耳下腺に発生した基底細胞腺腫の１例
• ショウレイ ホウコク ジカセン ニ ハッセイ シタ キテイ サイボウ センシュ ノ 1レイ

Abstract

A 30-year-old man was referred to our department because of pain in the right pre-auricular region on mouth opening. Physical examination revealed a round, hard mass, about 25mm in diameter, in the parotid gland. Computed tomography (CT) showed a round, well-circumscribed mass. An oval mass measuring about 5×10mm was detected inside the tumor on CT. The clinical diagnosis was a benign tumor of the right parotid gland, and superficial parotid lobectomy was performed. Histopathologically, the tumor was characterized by multiple duct-like structures or solid and trabecular masses composed of small isomorphic cells with hyperchronic, round nuclei and eosinophilic cytoplasm. A basal cell adenoma was diagnosed on the basis of these findings. The inner small mass of the tumor showed lymphadenopathy. Immunohistochemical examination showed that the inner epithelial cells of the tubular tumor nests were positive for keratin, and the outer cells were positive for a-smooth muscle actin and vimentin. The stromal cells stained positively for S-100 protein, α-smooth muscle actin, and vimentin, and stained negatively for keratin. The positive ratio of Ki-67 was 6.1%, which indicated relatively low rate of Ki-67 positive cells, supported the diagnosis of a basal cell adenoma.

Journal

• Japanese Journal of Oral and Maxillofacial Surgery

  Japanese Journal of Oral and Maxillofacial Surgery 51 (7), 352-355, 2005

  Japanese Society of Oral and Maxillofacial Surgeons

Keywords

• basal cell adenoma
• parotid gland
• immunohistochemical study

Details

• CRID: 1390282681507746688
• NII Article ID: 10018954887
• NII Book ID: AN00189163
• DOI: 10.5794/jjoms.51.352
• ISSN: 21861579
• ISSN: 00215163
• NDL BIB ID: 7431755
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7431755
• Web Site: https://search.jamas.or.jp/link/ui/2006004159
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed