Sebaceous Adenoma of the Parotid Gland A Case Report with Fine Needle Aspiration Findings and Histologic Correlation

Background Sebaceous adenoma of the salivary gland is an extremely rare, benign neoplasm that predominantly involves the nu or salivary glands. The major problem in dealing with sebaceous adenoma is the recognition of this entity to avoid confusion with other wore a aggressive neoplasms, such as mucoepidermoid carcinoma. hi particular, recognition of this entity in cytologic specimen is is important to avoid radical surgery. Case A 29-year-old woman presented with an enlarging parotid mass. Fine needle aspiration (FNA) biopsy showed cellular smears composed of sheets and aggregates of cuboidal to low columnar cells with slightly irregular nuclear contours, prominent nucleoli and a moderate amount of cytoplasm that appeared squamoid and finely vacuolated. The FNA was misinterpreted (is possible low grade mucoepidermoid carcinoma. Conclusion We report a case of a rare and unusual tumor of the salivary glands. The major problem in dealing with sebaceous adenoma is the recognition of this entity in cytologic specimens to avoid confusion with other wore aggressive neoplasms such as low grade mucoepidermoid carcinoma and potentially to avoid radical surgery. In this paper, the clinical presentation, pathological findings on the fine needle aspirate and surgical resection specimen, and review of the literature will be discussed. (Acta Cytol 2009;53:419-422)