Sebaceous lymphadenoma of the parotid gland: report of two cases and review of the literature.

Sebaceous lymphadenoma is an unusual salivary gland neoplasm which is rarely correctly diagnosed pre-operatively in the parotid gland. Two cases of sebaceous lymphadenoma are presented in which, in common with most cases reported in the literature, the correct pre-operative diagnosis was not made. Sebaceous lymphadenoma rarely transforms into a malignant tumour. Fine needle aspiration cytology identifies a benign process in the majority of patients who receive appropriate treatment on this basis. Although an uncommon tumour, it should be taken into consideration in the differential diagnosis of a solitary parotid mass.