Multifocal nodular oncocytic hyperplasia clear cell variant: a rare case report of salivary gland lesion

Nodular oncocytic hyperplasia is rare non-neoplastic lesion of the salivary glands. Histopathologically, it is characterized by multiple unencapsulated nodular proliferations. It can be confused with tumors in the differential diagnosis both cytopathologically and histopathologically. Differential diagnosis should be made with metastatic tumors and clear cell salivary gland tumors, especially if clear cells predominate. In this rare case, we presented the cytological, histopathological and immunohistochemical findings of clear cell dominant nodular oncocytic hyperplasia in the unilateral parotid deep lobe in a 72-years-old male patient.