Parotid gland myoepithelioma with remarkable cystic formation: A case report

Hiroe Kakehashi, Shintaro Kawano, Tamotsu Kiyoshima, Mayumi Shimizu, Masafumi Moriyama, Ryota Matsubara, Takahiro Kiyosue, Yuichi Goto, Hideki Shiratsuchi, Seiji Nakamura

Research output: Contribution to journalArticlepeer-review

Abstract

Myoepithelioma is a rare tumor, accounting for less than 1.5% of all salivary gland tumors. Generally, this tumor exhibits painless solid mass. We here report an extremely rare case of myoepithelioma with remarkable cystic formation in the parotid gland in an 80-year-old female. In this case, a malignant tumor with cystic formation of the parotid gland was clinically suspected following preoperative imaging examinations. Standard superficial parotidectomy was thus performed under general anesthesia. Histopathologic findings revealed that the tumor consisted of spindle cells, plasmacytoid cells, and epithelioid cells, and remarkable cystic formation was observed. Immunohistochemically, the neoplastic cells were positive for S-100, cytokeratin, vimentin, and calponin. The final histopathologic diagnosis was myoepithelioma. Four years have past after the surgery without recurrence of the tumor.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalJournal of Oral and Maxillofacial Surgery, Medicine, and Pathology
Volume25
Issue number2
DOIs
Publication statusPublished - Apr 2013

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oral Surgery
  • Pathology and Forensic Medicine
  • Otorhinolaryngology

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