RARE CYSTIC LESION IN THE PAROTID GLAND: ONCOCYTİC PAPİLLARY CYSTADENOMA

Introduction: Oncocytic papillary cystadenoma is a very rarely seen epithelial tumor of the salivary gland. It is mostly located in the minor salivary glands. It usually occurs at the age of over 40 and is more commonly seen in women than in men. Studies have shown no link between cigarette smoking and the formation of oncocytic papillary cystadenoma. In microscopic evaluation, it can be confused with Warthin tumor, which is seen very often in the parotid gland and which also has oncocytic epithelial cells. However, the absence of lymphoid stroma is the most important diagnostic finding that differentiates oncocytic papillary cystadenoma from Warthin tumor.

Case: A 62-year-old male patient was admitted to the clinic with the complaint of neck swelling. He had no history of cigarette smoking. In the ultrasonography of the patient, a homogeneous, parotid-located, anechoic cystic lesion without a solid component was observed. In the excised material, a cystic tumoral lesion, the cross-sectional surface of which was dirty white and yellow in color, was observed. The case was reported as papillary oncocytic cystadenoma by microscopic examination of the sections taken.

Conclusion: Our case, which is rarely seen and is located in the parotid gland, is presented so that it may be kept in mind when a Warthin tumor-like lesion without lymphoid stroma is observed and so that it may be taken into consideration in the differential diagnosis.

Key words: Salivary gland, cyst, tumor