Oncocytic Papillary Cystadenoma of Minor Salivary Glands: A Case Report

Oncocytic papillary cystadenoma is an extremely rare benign tumor that can affect salivary glands. Few cases of this entity have been reported in medical literature, making the clinical diagnosis very challenging.This paper reports the case of an 84-year-old female patient who was referred for a nodular lesion in the right side of the upper lip. Over the span of 8 months, the patient’s nodule increased in size, making it impossible to insert the maxillary prosthesis.Clinical examination revealed partial labial eversion, caused by the presence of a painless bluish nodular lesion in the right side of the upper lip.A complete excision of the lesion was performed under local anesthesia. Histological examination led to the diagnosis of an oncocytic papillary cystadenoma, and the postoperative course was straightforward with no complications.This case aims to highlight the clinical manifestations, histological characteristics and the possible differential diagnoses of this rare type of salivary gland tumors.