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Correspondence
Keratocystoma of the parotid gland: case report and immunohistochemical investigation
  1. Mei-Fang Zhang,
  2. Su-Xia Lin,
  3. Chun Yi,
  4. Jia Fu,
  5. Qiu-Liang Wu,
  6. Jing-Ping Yun
  1. State Key Laboratory of Oncology in Southern China, Department of Pathology, Cancer Center of Sun Yat-Sen University, Guangzhou, China
  1. Correspondence to Dr Jing-Ping Yun, Department of Pathology, Cancer Center of Sun Yat-Sen University, 651 East Dongfeng Road, Guangzhou 510060, China; yunjp{at}mail.sysu.edu.cn

https://doi.org/10.1136/jcp.2010.076521

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    Keratocystoma of the parotid gland was first defined and reported as an unusual pathological entity in 2002.1 It was not listed as an independent pathological entity in the revised World Health Organization (WHO) classification of salivary gland tumours published in 2005.2 Recently, the designation of keratocystoma of the parotid gland was introduced as a newly recognised diagnosis.3 Here, we present a case of a benign tumour of the parotid gland diagnosed as a keratocystoma.

    Case report

    A 37-year-old man presented with a painless circumscribed nodule that had been gradually enlarging in the left parotid gland area for six years. No cervical lymphadenopathy was detected. A subtotal parotidectomy was performed and a tumour was excised. No tumour recurrence was observed 18 months after the surgery.

    Grossly, the tumour was completely circumscribed within the parotid gland, measuring 20×18×15 mm in size. The cut surface revealed multilocular cystic spaces. No bleeding or necrosis was detected in the tumour.

    Histologically, the tumour consisted mainly of multiple cystic formations lined with stratified …

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