Metachronous bilateral pleomorphic adenoma of the parotid gland

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Sindeval José da SilvaAdriano Mota Loyola

Abstract

Bilateral salivary gland tumors are very rare, accounting for 3% of all parotid gland tumors. Although the most common tumor with bilateral development is the Warthin tumor, pleomorphic adenomas (PA) have been diagnosed simultaneously as well, but in a smaller incidence. Because of this, the prevalence, etiology, pathogenesis, and behavior of the PA in this context are poorly understood. We present a case of bilateral metachronous PA affecting the parotid gland in a 63-year-old woman. Clinically, the lesions presented with similar aspects as seen in cases of solitary PA with slow-growing asymptomatic nodule. Both lesions were diagnosed by fine-needle aspiration biopsy at an interval of 2 years between them. A total and superficial parotidectomy for left and right tumors, respectively, was performed. Only on the left side some facial nerve branches were removed that induced partial paralysis in the patient. A review of the pertinent literature is included.

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Citations

Jan 15, 2013·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Bryony SouthornPeter A Brennan
Mar 21, 2012·Journal of Investigative and Clinical Dentistry·Jian Tao HuangYun Fu Zhao
Feb 6, 2013·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Goro KawasakiMasahiro Umeda
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Jan 12, 2021·Case Reports in Otolaryngology·Walter ColangeliEvaristo Belli

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