A case of MALT lymphoma in the parotid gland suggesting an association with Sjögren's syndrome

Abstract

A case of MALT lymphoma in the parotid gland is reported, along with a brief discussion. An 81-year-old woman was referred to our department on November 11, 2000 because of a swelling in the left parotid gland. A benign lymphoepithelial lesion in the left parotid gland had been diagnosed in 1984, and rheumatoid arthritis was diagnosed in 1993. A tentative diagnosis of a recurrent parotid tumor was made, and superficial parotidectomy was performed with the patient under general anesthesia. A histopathological diagnosis of MALT lymphoma was made. Secondary Sjogren's syndrome was diagnosed on detailed examination. In this patient, the MALT lymphoma was considered to have arisen from the benign lymphoepithelial lesion and was suspected to be associated with Sjogren's syndrome. There was no evidence of recurrence 2 years after the operation.