Unilateral swelling in the right parotid region: manifestation of b cell lymphoma

Approximately 2% of all salivary gland tumors are primary Non-Hodgkin lymphoma (NHL) and 75% of these lymphomas are seen in the parotid gland. Extra-nodal marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT), follicular B-cell lymphoma, and diffuse large B-cell lymphoma are the commonest subtypes of the NHL found in the salivary glands. The prognosis of different NHLs of the salivary gland depends on the histological subtypes and clinical stages. We present a case of diffuse large B-cell lymphoma in 65-year-old female patient and presented as a nonspecific unilateral right preauricular swelling.