A case of MALT lymphoma arising in the parotid gland

Abstract

A 61-year-old male was referred to our hospital because of relapsing of swelling in the left parotid gland. Ultrasonography and CT of the neck showed multiple enhanced cystic lesions. A fine-needle-aspiration biopsy and an open biopsy of the left parotid gland did not demonstrate malignant cells. A second parotid resection revealed a mucosa associated lymphoid tissue (MALT) lymphoma. He was treated by general chemotherapy of “R-CHOP” therapy, i.e. standard “CHOP therapy” with rituximab, with a resultant complete response.
Low-grade or indolent malignant lymphoma of the B-cell type, including MALT lymphoma, is often observed for a long period. It is important to perform frequent biopsies or remove the tumor for diagnosis.