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European Journal of Oral and Maxillofacial Surgery 2021 August;5(2):47-50

DOI: 10.23736/S2532-3466.20.00235-0

Copyright © 2020 EDIZIONI MINERVA MEDICA

language: English

A clinicopathological study of oncocytoma of salivary origin: a rare tumor occurring predominantly in the parotid gland

Pema EDEN 1, Primali R. JAYASOORIYA 2, Nadeena S. JAYASURIYA 1, Sakuntha RATNAPREYA 3

1 Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka; 2 Department of Oral Pathology, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka; 3 Department of Dental Surgery, Asiri Surgical Hospital, Colombo, Sri Lanka



BACKGROUND: Oncocytoma of salivary origin is a rare benign tumor, composed of epithelial cells containing granular cytoplasm.
METHODS: The study presents a clinicopathological analysis of oncocytoma and to discuss its histopathological differential diagnosis.
RESULTS: All tumors occurred in elderly patients in the 6th or 7th decade of life with a slight female predilection (67%). Approximately 86% occurred in major salivary glands. Histopathologically 57% of tumors presented as a single nodule while the remaining tumors exhibited a multinodular appearance. All oncocytomas showed dark-blue cytoplasmic granules, with phosphotungstic acid hematoxylin staining (PTAH) which was used to confirm the diagnosis. None of the patients who were treated with surgical excision developed recurrences.
CONCLUSIONS: In conclusion, oncocytoma is a rare benign salivary tumor occurring predominantly in elderly patients. Although, histopathological diagnosis is reliable, awareness of its differential diagnosis is important to avoid misdiagnosis and overtreatment.


KEY WORDS: Oncocytoma, renal; Salivary glands; Parotid gland; Salivary glands, minor

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