Abstract:

Lymphadenomas comprise a very rare group of salivary gland tumors, the two types of which are defined as sebaceous and non-sebaceous lymphadenomas. In the case presented here, a patient presented with swelling in the right parotid gland, and the mass seen by ultrasonography was suggestive of pleomorphic adenoma. According to fine needle aspiration biopsy, the presence of lymphoid and epithelial cells first suggested a diagnosis of Warthin tumor. However, the presence of cystic degenerated ductal structures and the solid, benign nature of the epithelial islands intertwined with mature lymphoid cells in the biopsied specimen showed no sebaceous differentiation, and thus, the case was reported as “non-sebaceous lymphadenoma.” We aimed to present the relevant literature and our case of non-sebaceous lymphadenoma, whose clinicopathological features and etiopathogenesis are not clearly understood, since it is considered to be underreported due to its sonographic and histomorphological similarities to pleomorphic adenoma and Warthin tumor.

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