Abstract
Lymphomas arising in mucosa-associated lymphoid tissue (MALT) are referred to as MALT lymphomas. They are considered low-grade B-cell lymphomas and have recently been attracting attention. The most frequent site of MALT lymphomas in the gastrointestinal tract is the stomach, but they are also known to occur in the salivary and thyroid glands in the head and neck area. We report a case of MALT lymphoma of the parotid gland. The left superficial lobe of the parotid gland was excised, and the histological diagnosis was MALT lymphoma. The patient was treated with radiation therapy (external γ-irradiation) postoperatively. MALT lymphoma is a new disease entity, and since a treatment method has yet to be established, treatment varies from institution to institution and long-term clinical assessment of the outcome of treatment of this disease remains to be performed.
