Cytodiagnosis of Oncocytoma of Parotid Gland: A Report of Two Cases
Correspondence Address :
Dr. Shreya Ghosh,
Junior Resident, Department of Pathology, Jawaharlal Nehru Medical College, DMIHER, Radhikabai PG Girl’s Hostel, Sawangi Meghe, Wardha-442001, Maharashtra, India.
E-mail: dr.shreyaghosh94@gmail.com
Among benign neoplasms of the salivary gland, malignancies are less common. One of the rarest tumours found in the oral cavity is oncocytoma, comprising less than 2% of all oral neoplasms and carrying a 1% risk of malignant transformation. Oncocytoma is rare among benign neoplasms, typically affecting females and impacting the major salivary glands. Literature discussing the cytodiagnosis of oncocytoma through Fine Needle Aspiration Cytology (FNAC) is even scarcer. Cytomorphological features indicating a predominantly oncocytic population with benign nuclear characteristics suggest the diagnosis of oncocytoma. The presence of oncocytes alongside other cell types in cytology smears suggests oncocytosis or a tumour-like presentation of Warthin’s tumour. Due to its unique features and clinical presentation, clinicians may misdiagnose this tumour as pleomorphic adenoma, haemangioma, or another form of oncocytosis due to its rarity and clinical features. Therefore, only histopathological examination can provide a definitive diagnosis. The present report discusses two unusual cytodiagnoses of oncocytoma identified through FNAC of the parotid gland in a 50-year-old female and a 70-year-old male, along with their clinicoradiological findings and subsequent tumour excision. Furthermore, the authors aim to raise awareness about the importance of a comprehensive work-up and optimal treatment selection for these lesions.
Fine needle aspiration cytology, Oxyphilic adenoma, Differential diagnosis of oncocytosis
DOI: 10.7860/JCDR/2024/68375.19343
Date of Submission: Nov 10, 2023
Date of Peer Review: Jan 10, 2024
Date of Acceptance: Feb 27, 2024
Date of Publishing: May 01, 2024
AUTHOR DECLARATION:
• Financial or Other Competing Interests: None
• Was informed consent obtained from the subjects involved in the study? Yes
• For any images presented appropriate consent has been obtained from the subjects. Yes
PLAGIARISM CHECKING METHODS:
• Plagiarism X-checker: Nov 08, 2023
• Manual Googling: Jan 08, 2024
• iThenticate Software: Feb 22, 2024 (12%)
ETYMOLOGY: Author Origin
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